Abstract

Nano-sphere lithography technique was used to fabricate nano-patterned Si substrates with various depths by controlling the etching time. The depth-dependent broadband anti-reflection was observed and the reflectivity could be reduced to 5%. By depositing Si quantum dots/SiO2 multilayer on nano-patterned substrate, the reflection was further suppressed and luminescence intensity was significantly enhanced. The luminescence enhancement is dependent of the etching depth and the luminescence can be one order of magnitude stronger than that on flat substrate due to both the improved absorption of excitation light and the increase of light extraction ratio by nano-patterned structures.

©2011 Optical Society of America

1. Introduction

Since the discovery of the quantum confinement (QC) effect in porous silicon leading to an intense photoluminescence (PL) in the visible range at room temperature in 1990, photo and electro-luminescence from various Si quantum structures have been widely studied in recent years in order to realize the Si-based micro/nano optoelectronic integration [16]. Among the many kinds of Si quantum structures, Si quantum dots (Si QDs)-based multilayer, such as Si QDs/SiO2 and Si QDs/SiNx multilayer, has been considered as one of the promising candidates in the Si-based light emitting devices as well as in the next generation Si solar cells because the dot size can be well controlled in the multilayered structures [57].

Despite of the huge progress in the fabrication and luminescence properties of Si QDs-based system, Si-based light source is still the unique bottleneck in Si photonics. One of the key points is to improve the light emission efficiency for Si QDs-based materials. Due to the large difference of the refractive index between the Si and SiO2 materials, the emission light will be internal reflected in the interface as a consequence of Snell’s law. It is implied that only a small portion of emission light can be escaped from the film front surface which results in the very low external quantum efficiency. The situation becomes much more serious in the Si QDs-based multilayered structures. So far, several approaches have been proposed to improve the external luminescence efficiency by enhancing the light extraction ratio, such as using surface plasmon polaritons (SPP), constructing photonic crystal structures [810], or using semiconductor nano-wires [11].

Surface roughening is an effective way to reduce the surface reflection and to improve the light extraction ratio as reported previously [1216]. Min-Yann Hsieh et al. fabricated textured GaN-based light-emitting diodes (LEDs) by nano-sphere lithography technique which obviously improved the device performance [12]. Corrugated organic light emitting diodes were also fabricated on patterned substrates using UV nano-imprint lithography process; light extraction has been improved and power efficiencies of the corrugated OLEDs has been enhanced by 93% [13]. Philippe Lalanne et al. fabricated subwavelength periodic structures on the Si wafers by holographically recording a crossed-grating in a photoresist mask followed by reactive-ion etching process which exhibited the good antireflection characteristics [16]. Recently, SiO2 nano-spheres were used to obtain the Si-based nano-cone or nano-pillar structures and the antireflection and enhanced optical absorption was achieved [17]. In our previous work, we prepared the nano-patterned Si substrates by polystyrene (PS) nano-sphere lithography technique, which is an efficient and inexpensive method for fabrication of periodic nanostructures with feature size in the sub-micron region [18]. The improved field emission characteristics from amorphous Si layer and electroluminescence from Si quantum dots were found by using nano-patterned Si substrates [4,19]. In the present work, we fabricated the nano-patterned Si substrates with various depths by controlling the etching time in order to improve the light emission efficiency of Si QDs-based multilayer. It was found that the surface reflection of Si wafers can be obviously suppressed in a wide spectral range and depth-dependent anti-reflection was confirmed. By depositing Si QDs/SiO2 multilayer on the nano-patterned substrates, the surface reflection can be as low as 5% in visible light range. The depth-dependent photo-luminescence enhancement for Si QDs was observed and the emission intensity can be enhanced by over one order of magnitude.

2. Experimental

The nano-patterned Si substrates were fabricated in three steps. First, a monolayer of PS nano-spheres with diameter of 220nm were coated on the p-type Si (1.5~3Ω·cm) substrates by using the self-assembly technique. Then, the coated substrates with a mask made of PS nano-spheres were etched in the reaction ion etching (RIE) system by using 30sccm CF4 gas under RF power of 20W. Finally, the PS nano-spheres were removed in tetrahydrofuran (THF). The etching time in the second step was varied from 8 min to 16 min in order to acquire various etching depths.

Both the flat and the nano-patterned p-Si substrates were cleaned and placed in the conventional plasma enhanced chemical vapor deposition (PECVD) system, hydrogenated amorphous silicon (a-Si:H)/SiO2 multilayer samples were deposited by alternatively changing the hydrogenated amorphous silicon (a-Si:H) film deposition and in situ plasma oxidation processes [20]. The substrate temperature and the r.f. power were maintained at 250°C and 50W, respectively. The a-Si:H/SiO2 multilayer samples were dehydrogenated at 450°C for 1 hr and then thermally annealed at 1000°C for 1 hr to obtain Si QDs/SiO2 multilayer. The surface morphology was characterized by Atomic Force Microscopy (AFM) after deposition of Si QDs/SiO2 multilayer on nano-patterned substrate as shown in Fig. 1(a) ; it exhibits the periodic nano-cone structures. The periodicity of formed nano-pattern is about 220 nm which is in agreement with the size of the nano-spheres. Figure 1(b) gives the cross-sectional transmission electron microscopy (TEM) image of the Si QDs/SiO2 multilayer on the nano-patterned Si substrate. Inset is the high resolution TEM image which shows the formation of Si QDs with size of 2.6 nm after the annealing. The thickness of SiO2 layer is about 1.5 nm. The reflection spectra of front surface were measured by using Shimadzu UV-3600 spectrophotometer for nearly normal light incidence (5% offset) in the wavelength range from 200nm to 1000nm. Room temperature photoluminescence signals were collected by CCD detector under the excitation of He-Cd laser (325nm).

 figure: Fig. 1

Fig. 1 (a) AFM image of periodic nano-cone arrays with Si QDs/SiO2 multilayer on the nano-patterned p-Si substrate. Inset is the cross-sectional AFM images for 8min and 16min etched Si substrates. (b) The cross-sectional TEM image of 10min etched nano-patterned substrate with Si QDs/SiO2 multilayer on it. Inset of figure (b) is the high resolution TEM image and the formation of Si QDs can be clearly identified.

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3. Results and Discussion

As shown in Fig. 1(b), the periodicity of the nano-patterned structures is 220nm which corresponds to the size of the PS nano-sphere and the depth of the nano-cone is about 69nm after 10min etching. Si QDs/SiO2 multilayer deposited on the nano-patterned substrate keeps the periodically patterned morphology. The depth of nano-cone as a function of RIE etching time is given in Fig. 2 by summarizing the AFM measurement results. The depth is estimated from the top of the nano-cone to the bottom as indicated in the inset of Fig. 2. It is found that the depth can be controlled by changing the etching time, which is increased gradually as the etching process evolves. It is found that the depth estimated from AFM is smaller than that shown in TEM image. However, the depths derived by AFM image do inflect the depth increase with the development of etching time. Figure 3 gives the reflection spectra for flat and nano-patterned Si substrates with different etching time in the spectra range of 200-1000nm. It is shown that the reflectivity from the polished front surface of flat Si wafer is quite high in the whole measurement range and comes up to higher than 40% in the visible light region. It is interesting to find that the light reflection from the front surface is obviously suppressed for all the nano-patterned samples within the whole spectral range, indicating the anti-reflection characteristics for nano-patterned Si substrates. It is also found that the reflection is gradually reduced with increasing etching time. In the visible light region (400-800nm), the reflectivity is reduced from 20% for 8min etched sample to 5% for 16min etched sample, which is as low as the reflection from nano-scale textured Si surface obtained by wet chemical etching technique [21] and close to the antireflection effect reported in Ref. [16].

 figure: Fig. 2

Fig. 2 Etching depths of the nano-patterned substrates versus the etching time.

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 figure: Fig. 3

Fig. 3 Reflection spectra of the polished and nano-patterned substrates with various depths by changing the etching time.

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The broadband anti-reflection of nano-patterned Si substrates can be understood by considering the front surface morphology of the etched Si wafer as given in Fig. 1, which shows the ordered and densely packed Si nano-structures. It is found that the formed Si nano-structures have the cone-shape which causes the gradually increase of fractional area occupied by Si from top to bottom as shown in Fig. 1(b). It has been reported that the gradually changing reflective index from the surface can effectively eliminate the reflected light across a wide spectrum due to the reflective index matching [11,21,22]. The gradually changing of Si filling factor can result in the formation of gradual refraction index from front surface to bottom as in our case. Therefore, the reflection of the front surface can be significantly reduced in a wide spectral range compared with the flat Si wafer [22]. As increasing the etching time, the cone depth became larger and larger; the high aspect ratio can further improve the anti-reflection in a wide spectral range as demonstrated in our experiments. It is worth noting that both the vertical and lateral sizes of present nano-patterned structures are smaller than the wavelength of the incident light, which is more suitable for the nano-optoelectronic devices with the sub-micrometer-thick active layers.

Figure 4 is the reflection spectra for Si QDs/SiO2 multilayer deposited on nano-patterned Si substrates with various etching time. It is found that the anti-reflection effect is further improved with the multilayer structures deposited on. The reflectivity is almost less than 10% for all samples in the whole spectra. For 16min etched Si substrate, the reflectivity decreases down to the lowest level (less than 2%) in 400-900nm. This is partly because the top SiO2 layer has a low reflection index than Si substrates. More importantly, the deposited Si QDs/SiO2 multilayer keeps the nano-patterned morphology due to the good conformal deposition process in PECVD systems as shown in Fig. 1. The nano-textured structures effectively eliminate the reflection of light in the periodic interfaces between Si QDs and SiO2 layers in multilayered structures.

 figure: Fig. 4

Fig. 4 Reflection spectra of the Si QDs/SiO2 multilayer on nano-patterned substrates with various depths.

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In order to study the influence of nano-patterned structures on the luminescence behaviors of Si QDs-based materials, room temperature photoluminescence (PL) was carried out for the Si QDs/SiO2 multilayer deposited on nano-patterned Si wafers and compared with that on flat substrate. The PL from Si QDs/SiO2 multilayer on flat Si wafer is the weakest among all the measured PL spectra as given in Fig. 5 . The PL intensities of samples on nano-patterned substrates are significantly increased compared to that of sample deposited on flat substrate and the depth-dependent luminescence enhancement can be observed. The luminescent intensities are gradually enhanced by increasing the etching time. We plot the integrated PL intensities as a function of etching time in Fig. 6 . It is found that the luminescence intensity is increased proportionally to the etching time. The integrated PL intensity is enhanced by more than one order of magnitude for sample on 16min etched substrate compared to that on flat substrate.

 figure: Fig. 5

Fig. 5 Room temperature photo-luminescence from Si QDs/SiO2 multilayer on flat and nano-patterned substrates under the excitation of He-Cd laser (325nm).

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 figure: Fig. 6

Fig. 6 Integrated photo-luminescence intensity of Si QDs/SiO2 multilayer as a function of the etching time.

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Because the internal reflection between the sub-layers in Si QDs/SiO2 multilayer can be significantly suppressed by using nano-patterned structures, the light extraction efficiency is effectively increased due to the anti-reflection in a wide spectral range which causes the light emission enhancement as revealed by our experimental results. On the other hand, the anti-reflection property in the PL measurement is bidirectional. The excitation light (He-Cd Laser, 325nm) is also benefited from the anti-reflection behavior. Since the reflection of incident light at UV region is also reduced as indicated in Fig. 2 and Fig. 3, the more incident light can penetrate into the Si QDs/SiO2 multilayer and be absorbed by Si QDs to excite much more electron-hole pairs to generate the strong emission. Therefore, both the increase of absorption of incident excitation light and extraction efficiency of emission light contribute to the significant enhancement of photoluminescence intensity from Si QDs/SiO2 multilayer on nano-patterned substrates. It has been reported that the amount of light extracted from GaN-based materials can be increased by forming the textured structures on the deposited luminescent layers via the surface roughening process [4,8]. In our case, we developed the nano-sphere lithography technique to get nano-patterned substrates and subsequently deposited the Si QDs-based luminescent films on them. Therefore, the surface textures can be naturally formed due to the conformal deposition process in CVD system, which avoids the damages to the formed device structures, especially for Si QDs/SiO2 multilayer sample, in which the thicknesses of both sub-layers are in the nano-meter scale.

4. Conclusion

In summary, depth-dependent antireflection and luminescence enhancement were observed for Si QDs/SiO2 multilayer samples deposited on nano-patterned Si substrates, which were fabricated by using nano-sphere lithography technique. By using nano-patterned p-Si substrates instead of the flat one, the PL intensity of Si QDs/SiO2 multilayer is significantly enhanced by over one order of magnitude due to both the improved incident light absorption and the light extract ratio of emission light from the front surface. Our experimental results demonstrate that the light emission efficiency of Si-based light resource can be improved by forming nano-patterned structures. The present approach can also be applied for next generation Si QDs-based solar cells for improving the light absorption efficiency.

Acknowledgements

This work is supported by “973” project (2007CB613401) and NSFC (No. 61036001, 10874070) and NSF of Jiangsu Province (BK2010010).

References and links

1. G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010). [CrossRef]   [PubMed]  

2. L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000). [CrossRef]   [PubMed]  

3. K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992). [CrossRef]  

4. D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010). [CrossRef]   [PubMed]  

5. J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009). [CrossRef]   [PubMed]  

6. J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005). [CrossRef]  

7. F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009). [CrossRef]  

8. Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009). [CrossRef]  

9. M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010). [CrossRef]  

10. B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008). [CrossRef]  

11. C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009). [CrossRef]   [PubMed]  

12. M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008). [CrossRef]  

13. A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010). [CrossRef]  

14. W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010). [CrossRef]  

15. A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009). [CrossRef]  

16. P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997). [CrossRef]  

17. J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009). [CrossRef]  

18. W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007). [CrossRef]  

19. W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008). [CrossRef]   [PubMed]  

20. D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008). [CrossRef]  

21. S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006). [CrossRef]  

22. N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010). [CrossRef]  

References

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  1. G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
    [Crossref] [PubMed]
  2. L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
    [Crossref] [PubMed]
  3. K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
    [Crossref]
  4. D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
    [Crossref] [PubMed]
  5. J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
    [Crossref] [PubMed]
  6. J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
    [Crossref]
  7. F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
    [Crossref]
  8. Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
    [Crossref]
  9. M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
    [Crossref]
  10. B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
    [Crossref]
  11. C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
    [Crossref] [PubMed]
  12. M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
    [Crossref]
  13. A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
    [Crossref]
  14. W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
    [Crossref]
  15. A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
    [Crossref]
  16. P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997).
    [Crossref]
  17. J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
    [Crossref]
  18. W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
    [Crossref]
  19. W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
    [Crossref] [PubMed]
  20. D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
    [Crossref]
  21. S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
    [Crossref]
  22. N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
    [Crossref]

2010 (6)

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
[Crossref] [PubMed]

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

2009 (6)

A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
[Crossref]

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

2008 (4)

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

2007 (1)

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

2006 (1)

S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
[Crossref]

2005 (1)

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

2000 (1)

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

1997 (1)

P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997).
[Crossref]

1992 (1)

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

Akamatsu, K.

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

Altun, A. O.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Brandt, M. S.

S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
[Crossref]

Burkhard, G. F.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Byeon, C. C.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Chen, C.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Chen, D.

Chen, D. Y.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Chen, G.

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

Chen, G. R.

Chen, K.

D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
[Crossref] [PubMed]

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

Chen, K. J.

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Chen, L.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Chen, T.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Cheng, S.-L.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Cheng, Y.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Cho, C.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Choi, D.-G.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Choi, J.-H.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Connor, S. T.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Cui, Y.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Dal Negro, L.

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

Dufour, C.

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Fan, S.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Feng, D.

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

Franzò, G.

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

Fujii, M.

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

Gan, X.

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

Gong, Y.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Gosele, U.

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

Gourbilleau, F.

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Guo, S.

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

Han, P. G.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Hayashi, S.

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

Heitmann, J.

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

Hsieh, M.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Hsu, C. M.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Hu, E. L.

A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
[Crossref]

Huang, C.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Huang, J.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Huang, X.

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

Jeon, S.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Jeong, J.-H.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Ke, M.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Kim, B.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Kim, J. S.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Kim, K.-D.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Koynov, S.

S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
[Crossref]

Kuo, D.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Kwon, M.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Lalanne, P.

P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997).
[Crossref]

Lavayen, V.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Lee, E.-S.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Lee, J.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Lee, S.-W.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Lee, W.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Li, R.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Li, W.

D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
[Crossref] [PubMed]

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

Lin, T.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Liu, Y.

Lu, C.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Ma, Z. Y.

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Maestre, D.

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Makarova, M.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Mazzoleni, C.

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

McGehee, M.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

McGroddy, K. C.

A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
[Crossref]

Mochizuki, Y.

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

Morris, G. M.

P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997).
[Crossref]

Muller, F.

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

Mun, J.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Negro, L. D.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Newcomb, S. B.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Nishi, Y.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

O’Dwyer, C.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Palais, O.

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Park, H.-D.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Park, S.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Park, T.

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Pavesi, L.

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

Priolo, F.

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

Qin, G. G.

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

Ran, G. Z.

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

Shi, W. H.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Shim, J.

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Song, C.

Song, F.

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

Stutzmann, M.

S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
[Crossref]

Sun, H.

Sun, K.

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

Sun, P.

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

Szachowicz, M.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Tamboli, A. C.

A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
[Crossref]

Ternon, C.

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Torres, C. M.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Tsuruoka, T.

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

Uang, K.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Visimberga, G.

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Vuckovic, J.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Wan, J.

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

Wan, N.

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

Wang, C.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Wang, P.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Wang, Q.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Wang, Q. M.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Wang, S.

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

Wang, T.

Wang, X.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Wei, D.

Wei, D. Y.

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

Xu, H. J.

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

Xu, J.

D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
[Crossref] [PubMed]

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

Xu, L.

D. Chen, Y. Liu, J. Xu, D. Wei, H. Sun, L. Xu, T. Wang, W. Li, and K. Chen, “Improved emission efficiency of electroluminescent device containing nc-Si/SiO(2) multilayers by using nano-patterned substrate,” Opt. Express 18(2), 917–922 (2010).
[Crossref] [PubMed]

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

Xu, Y.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Yang, C.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Yeh, D.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Yerci, S.

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

Yu, Y.

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

Yu, Z.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Zacharias, M.

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

Zhang, X. G.

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

Zhao, W.

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

Zhou, J.

J. Zhou, G. R. Chen, Y. Liu, J. Xu, T. Wang, N. Wan, Z. Y. Ma, W. Li, C. Song, and K. J. Chen, “Electroluminescent devices based on amorphous SiN/Si quantum dots/amorphous SiN sandwiched structures,” Opt. Express 17(1), 156–162 (2009).
[Crossref] [PubMed]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

Zhu, J.

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Acta Mater. (1)

N. Wan, J. Xu, G. Chen, X. Gan, S. Guo, L. Xu, and K. Chen, “Broadband antireflection and enhanced field emission from catalyst-free grown small-sized ITO nanowires at a low temperature,” Acta Mater. 58(8), 3068–3072 (2010).
[Crossref]

Adv. Mater. (Deerfield Beach Fla.) (2)

J. Heitmann, F. Muller, M. Zacharias, and U. Gosele, “Silicon Nanocrystals: Size Matters,” Adv. Mater. (Deerfield Beach Fla.) 17(7), 795–803 (2005).
[Crossref]

B. Kim, C. Cho, J. Mun, M. Kwon, T. Park, J. S. Kim, C. C. Byeon, J. Lee, and S. Park, “Enhancement of the External Quantum Efficiency of a Silicon Quantum Dot Light-Emitting Diode by Localized Surface Plasmons,” Adv. Mater. (Deerfield Beach Fla.) 20(16), 3100–3104 (2008).
[Crossref]

Appl. Phys. Lett. (2)

K. Chen, X. Huang, J. Xu, and D. Feng, “Visible photoluminescence in crystallized amorphous Si:H/SiNx:H multiquantum-well structures,” Appl. Phys. Lett. 61(17), 2069 (1992).
[Crossref]

S. Koynov, M. S. Brandt, and M. Stutzmann, “Black nonreflecting silicon surfaces for solar cells,” Appl. Phys. Lett. 88(20), 203107 (2006).
[Crossref]

Appl. Surf. Sci. (1)

W. Li, L. Xu, W. Zhao, P. Sun, X. Huang, and K. Chen, “Fabrication of large-scale periodic silicon nanopillar arrays for 2D nanomold using modified nanosphere lithography,” Appl. Surf. Sci. 253(22), 9035–9038 (2007).
[Crossref]

IEEE Electron Device Lett. (1)

M. Hsieh, C. Wang, L. Chen, T. Lin, M. Ke, Y. Cheng, Y. Yu, C. Chen, D. Yeh, C. Lu, C. Huang, C. Yang, and J. Huang, “Improvement of External Extraction Efficiency in GaN-Based LEDs by SiO2 Nanosphere Lithography,” IEEE Electron Device Lett. 29(7), 658–660 (2008).
[Crossref]

IEEE J. Sel. Top. Quantum Electron. (1)

M. Makarova, Y. Gong, S.-L. Cheng, Y. Nishi, S. Yerci, R. Li, L. D. Negro, and J. Vuckovic, “Photonic Crystal and Plasmonic Silicon-Based Light Sources,” IEEE J. Sel. Top. Quantum Electron. 16(1), 132–140 (2010).
[Crossref]

IEEE Photon. Technol. Lett. (1)

W. Lee, S. Wang, K. Uang, T. Chen, D. Kuo, P. Wang, and P. Wang, “Enhanced Light Output of GaN-Based Vertical-Structured Light-Emitting Diodes With Two-Step Surface Roughening Using KrF Laser and Chemical Wet Etching,” IEEE Photon. Technol. Lett. 22(17), 1318–1320 (2010).
[Crossref]

J. Appl. Phys. (2)

F. Gourbilleau, C. Ternon, D. Maestre, O. Palais, and C. Dufour, “Silicon-rich SiO2 /SiO2 multilayers: A promising material for the third generation of solar cell,” J. Appl. Phys. 106(1), 013501 (2009).
[Crossref]

Y. Mochizuki, M. Fujii, S. Hayashi, T. Tsuruoka, and K. Akamatsu, “Enhancement of photoluminescence from silicon nanocrystals by metal nanostructures made by nanosphere lithography,” J. Appl. Phys. 106(1), 013517 (2009).
[Crossref]

J. Nanosci. Nanotechnol. (1)

G. G. Qin, G. Z. Ran, K. Sun, and H. J. Xu, “Light emission from nanoscale Si/Si oxide materials,” J. Nanosci. Nanotechnol. 10(3), 1584–1595 (2010).
[Crossref] [PubMed]

Nano Lett. (1)

J. Zhu, Z. Yu, G. F. Burkhard, C. M. Hsu, S. T. Connor, Y. Xu, Q. Wang, M. McGehee, S. Fan, and Y. Cui, “Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays,” Nano Lett. 9(1), 279–282 (2009).
[Crossref]

Nanotechnology (2)

P. Lalanne and G. M. Morris, “Antireflection behavior of silicon subwavelength periodic structures for visible light,” Nanotechnology 8(2), 53–56 (1997).
[Crossref]

W. Li, J. Zhou, X. G. Zhang, J. Xu, L. Xu, W. Zhao, P. Sun, F. Song, J. Wan, and K. Chen, “Field emission from a periodic amorphous silicon pillar array fabricated by modified nanosphere lithography,” Nanotechnology 19(13), 135308 (2008).
[Crossref] [PubMed]

Nat. Nanotechnol. (1)

C. O’Dwyer, M. Szachowicz, G. Visimberga, V. Lavayen, S. B. Newcomb, and C. M. Torres, “Bottom-up growth of fully transparent contact layers of indium tin oxide nanowires for light-emitting devices,” Nat. Nanotechnol. 4(4), 239–244 (2009).
[Crossref] [PubMed]

Nature (1)

L. Pavesi, L. Dal Negro, C. Mazzoleni, G. Franzò, and F. Priolo, “Optical gain in silicon nanocrystals,” Nature 408(6811), 440–444 (2000).
[Crossref] [PubMed]

Opt. Express (2)

Org. Electron. (1)

A. O. Altun, S. Jeon, J. Shim, J.-H. Jeong, D.-G. Choi, K.-D. Kim, J.-H. Choi, S.-W. Lee, E.-S. Lee, and H.-D. Park, “Corrugated organic light emitting diodes for enhanced light extraction,” Org. Electron. 11(5), 711–716 (2010).
[Crossref]

Phys. Status Solidi C (1)

A. C. Tamboli, K. C. McGroddy, and E. L. Hu, “Photoelectrochemical roughening of p-GaN for light extraction from GaN/InGaN light emitting diodes,” Phys. Status Solidi C 6(S2), S807 (2009).
[Crossref]

Semicond. Sci. Technol. (1)

D. Y. Chen, D. Y. Wei, J. Xu, P. G. Han, X. Wang, Z. Y. Ma, K. J. Chen, W. H. Shi, and Q. M. Wang, “Enhancement of electroluminescence in p–i–n structures with nano-crystalline Si/SiO2 multilayers,” Semicond. Sci. Technol. 23(1), 015013 (2008).
[Crossref]

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Figures (6)

Fig. 1
Fig. 1 (a) AFM image of periodic nano-cone arrays with Si QDs/SiO2 multilayer on the nano-patterned p-Si substrate. Inset is the cross-sectional AFM images for 8min and 16min etched Si substrates. (b) The cross-sectional TEM image of 10min etched nano-patterned substrate with Si QDs/SiO2 multilayer on it. Inset of figure (b) is the high resolution TEM image and the formation of Si QDs can be clearly identified.
Fig. 2
Fig. 2 Etching depths of the nano-patterned substrates versus the etching time.
Fig. 3
Fig. 3 Reflection spectra of the polished and nano-patterned substrates with various depths by changing the etching time.
Fig. 4
Fig. 4 Reflection spectra of the Si QDs/SiO2 multilayer on nano-patterned substrates with various depths.
Fig. 5
Fig. 5 Room temperature photo-luminescence from Si QDs/SiO2 multilayer on flat and nano-patterned substrates under the excitation of He-Cd laser (325nm).
Fig. 6
Fig. 6 Integrated photo-luminescence intensity of Si QDs/SiO2 multilayer as a function of the etching time.

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