Abstract

The enhanced efficiency of the crystalline silicon (c-Si) solar cell with nanopillar arrays (NPAs) was demonstrated by deployment of CdS quantum dots (QDs). The NPAs was fabricated by the colloidal lithography and reactive-ion etching techniques. Under a simulated one-sun condition, the device with CdS QDs shows a 33% improvement of power conversion efficiency, compared with the one without QDs. For further investigation, the excitation spectrum of photoluminescence (PL), absorbance spectrum, current-voltage (I-V) characteristics, reflectance and external quantum efficiency of the device was measured and analyzed. It is noteworthy that the enhancement of efficiency could be attributed to the photon down-conversion, the antireflection, and the improved electrical property.

© 2011 OSA

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    [CrossRef]
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    [CrossRef] [PubMed]
  24. C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
    [CrossRef] [PubMed]

2011 (2)

M. A. Tsai, P. C. Tseng, H. C. Chen, H. C. Kuo, and P. Yu, “Enhanced conversion efficiency of a crystalline silicon solar cell with frustum nanorod arrays,” Opt. Express19(S1Suppl 1), A28–A34 (2011).
[CrossRef] [PubMed]

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

2010 (3)

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

J. Y. Jung, Z. Guo, S. W. Jee, H. D. Um, K. T. Park, and J. H. Lee, “A strong antireflective solar cell prepared by tapering silicon nanowires,” Opt. Express18(S3Suppl 3), A286–A292 (2010).
[CrossRef] [PubMed]

2009 (4)

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

C. Chang, P. Yu, and C. Yang, “Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen,” Appl. Phys. Lett.94(5), 051114 (2009).
[CrossRef]

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

2008 (3)

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

2007 (3)

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

2005 (1)

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

2004 (2)

D. Poitras, J. A. Dobrowolski, T. Cassidy, P. Ma, M. Acree, and H. Vakil, “Toward perfect antireflection coatings. 2. Theory,” Appl. Opt.43(6), 1286–1295 (2004).
[CrossRef] [PubMed]

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

2002 (1)

2001 (1)

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

2000 (1)

D. J. Aiken, “High performance anti-reflection coatings for broadband multi-junction solar cells,” Sol. Energy Mater. Sol. Cells64(4), 393–404 (2000).
[CrossRef]

1998 (1)

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

1983 (1)

Acree, M.

Aiken, D. J.

D. J. Aiken, “High performance anti-reflection coatings for broadband multi-junction solar cells,” Sol. Energy Mater. Sol. Cells64(4), 393–404 (2000).
[CrossRef]

Andrä, G.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Arif, R. A.

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Bae, S. Y.

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

Bouhafs, D.

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

Cassidy, T.

Chang, C.

C. Chang, P. Yu, and C. Yang, “Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen,” Appl. Phys. Lett.94(5), 051114 (2009).
[CrossRef]

Chang, Y. C.

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Chang, Y. H.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Chattopadhyay, S.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Chen, C. C.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Chen, H. C.

Chen, K. H.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Chen, L. C.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Chen, Y. F.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Chen, Y. T.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Chikouche, A.

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

Chiu, C. H.

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

Christiansen, S.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Connor, S. T.

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

Cui, Y.

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

Dobrowolski, J. A.

Ee, Y. K.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Falk, F.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Gilchrist, J. F.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Guo, Z.

Hadjipanayis, G. C.

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

Hane, K.

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

Hsu, C. H.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Hsu, C. M.

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

Hsu, J. W. P.

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Hsu, Y. K.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Huang, C. Y.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Huang, Y. F.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Jee, S. W.

Jen, Y. J.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Jiang, Y. T.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Jung, J. Y.

Kanamori, Y.

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

Kumnorkaew, P.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Kuo, H. C.

M. A. Tsai, P. C. Tseng, H. C. Chen, H. C. Kuo, and P. Yu, “Enhanced conversion efficiency of a crystalline silicon solar cell with frustum nanorod arrays,” Opt. Express19(S1Suppl 1), A28–A34 (2011).
[CrossRef] [PubMed]

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Kwong, D. L.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Lee, C.

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

Lee, C. S.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Lee, J. H.

Lee, S. T.

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

Lee, Y. J.

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Li, J.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Li, X. H.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Lin, G. R.

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Lin, H. S.

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Lin, S. H.

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

Liu, E. S.

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Liu, T. A.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Lo, H. C.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Lo, P. G. Q.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Lu, T. C.

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

Ma, P.

Manohara, H.

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

McKenzie, B. B.

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Mobasser, S.

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

Moussi, A.

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

Ose, E.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Pan, C. L.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Park, K. T.

Peng, C. Y.

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Peng, K. Q.

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

Peters, D. W.

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Pietsch, M.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Poitras, D.

Ruby, D. S.

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Ruiz, J.

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

Sai, H.

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

Song, R. B.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Southwell, W. H.

Stelzner, T.

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Sun, X.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Tang, M. X.

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

Tansu, N.

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

Tong, H.

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Tsai, M. A.

M. A. Tsai, P. C. Tseng, H. C. Chen, H. C. Kuo, and P. Yu, “Enhanced conversion efficiency of a crystalline silicon solar cell with frustum nanorod arrays,” Opt. Express19(S1Suppl 1), A28–A34 (2011).
[CrossRef] [PubMed]

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

Tseng, P. C.

Um, H. D.

Vakil, H.

Wang, C. H.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Wang, D. Y.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Wang, X.

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

Wang, Y. T.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Wong, S. M.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Wu, X. L.

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

Xiao, J. Q.

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

Yang, C.

C. Chang, P. Yu, and C. Yang, “Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen,” Appl. Phys. Lett.94(5), 051114 (2009).
[CrossRef]

Yang, Y. J.

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Yu, H. Y.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Yu, P.

M. A. Tsai, P. C. Tseng, H. C. Chen, H. C. Kuo, and P. Yu, “Enhanced conversion efficiency of a crystalline silicon solar cell with frustum nanorod arrays,” Opt. Express19(S1Suppl 1), A28–A34 (2011).
[CrossRef] [PubMed]

C. Chang, P. Yu, and C. Yang, “Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen,” Appl. Phys. Lett.94(5), 051114 (2009).
[CrossRef]

Yu, P. C.

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

Yugami, H.

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

Zhang, G.

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Zhang, Y.

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

Zhao, H. P.

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

Zhao, Y.

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

Zhu, H.

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

ACS Nano (1)

C. Y. Huang, D. Y. Wang, C. H. Wang, Y. T. Chen, Y. T. Wang, Y. T. Jiang, Y. J. Yang, C. C. Chen, and Y. F. Chen, “Efficient Light Harvesting by Photon Downconversion and Light Trapping in Hybrid ZnS Nanoparticles/Si Nanotips Solar Cells,” ACS Nano4(10), 5849–5854 (2010).
[CrossRef] [PubMed]

Appl. Opt. (2)

Appl. Phys. Lett. (6)

C. M. Hsu, S. T. Connor, M. X. Tang, and Y. Cui, “Wafer-scale silicon nanopillars and nanocones by Langmuir-Blodgett assembly and etching,” Appl. Phys. Lett.93(13), 133109 (2008).
[CrossRef]

J. Li, H. Y. Yu, S. M. Wong, G. Zhang, X. Sun, P. G. Q. Lo, and D. L. Kwong, “Si nanopillar array optimization on Si thin films for solar energy harvesting,” Appl. Phys. Lett.95(3), 033102 (2009).
[CrossRef]

Y. Kanamori, K. Hane, H. Sai, and H. Yugami, “100 nm period silicon antireflection structures fabricated using a porous alumina membrane mask,” Appl. Phys. Lett.78(2), 142–143 (2001).
[CrossRef]

C. Chang, P. Yu, and C. Yang, “Broadband and omnidirectional antireflection from conductive indium-tin-oxide nanocolumns prepared by glancing-angle deposition with nitrogen,” Appl. Phys. Lett.94(5), 051114 (2009).
[CrossRef]

G. R. Lin, Y. C. Chang, E. S. Liu, H. C. Kuo, and H. S. Lin, “Low refractive index Si nanopillars on Si substrate,” Appl. Phys. Lett.90(18), 181923 (2007).
[CrossRef]

Y. K. Ee, R. A. Arif, N. Tansu, P. Kumnorkaew, and J. F. Gilchrist, “Enhancement of light extraction efficiency of InGaN quantum wells light emitting diodes using SiO2/polystyrene microlens arrays,” Appl. Phys. Lett.91(22), 221107 (2007).
[CrossRef]

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

Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tong, H. P. Zhao, J. F. Gilchrist, and N. Tansu, “Optimization of Light Extraction Efficiency of III-Nitride LEDs With Self-Assembled Colloidal-Based Microlenses,” IEEE J. Sel. Top. Quantum Electron.15(4), 1218–1225 (2009).
[CrossRef]

IEEE Photon. J. (1)

X. H. Li, R. B. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light Extraction Efficiency and Radiation Patterns of III-Nitride Light-Emitting Diodes With Colloidal Microlens Arrays With Various Aspect Ratios,” IEEE Photon. J.3(3), 489–499 (2011).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

M. A. Tsai, P. C. Yu, C. H. Chiu, H. C. Kuo, T. C. Lu, and S. H. Lin, “Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes,” IEEE Photon. Technol. Lett.22(1), 12–14 (2010).
[CrossRef]

J. Am. Chem. Soc. (1)

Y. Zhao, Y. Zhang, H. Zhu, G. C. Hadjipanayis, and J. Q. Xiao, “Low-temperature synthesis of hexagonal (Wurtzite) ZnS nanocrystals,” J. Am. Chem. Soc.126(22), 6874–6875 (2004).
[CrossRef] [PubMed]

Nano Lett. (3)

K. Q. Peng, X. Wang, X. L. Wu, and S. T. Lee, “Platinum nanoparticle decorated silicon nanowires for efficient solar energy conversion,” Nano Lett.9(11), 3704–3709 (2009).
[CrossRef] [PubMed]

C. Lee, S. Y. Bae, S. Mobasser, and H. Manohara, “A novel silicon nanotips antireflection surface for the micro Sun sensor,” Nano Lett.5(12), 2438–2442 (2005).
[CrossRef] [PubMed]

Y. J. Lee, D. S. Ruby, D. W. Peters, B. B. McKenzie, and J. W. P. Hsu, “ZnO nanostructures as efficient antireflection layers in solar cells,” Nano Lett.8(5), 1501–1505 (2008).
[CrossRef] [PubMed]

Nanotechnology (1)

T. Stelzner, M. Pietsch, G. Andrä, F. Falk, E. Ose, and S. Christiansen, “Silicon nanowire-based solar cells,” Nanotechnology19(29), 295203 (2008).
[CrossRef] [PubMed]

Nat. Nanotechnol. (1)

Y. F. Huang, S. Chattopadhyay, Y. J. Jen, C. Y. Peng, T. A. Liu, Y. K. Hsu, C. L. Pan, H. C. Lo, C. H. Hsu, Y. H. Chang, C. S. Lee, K. H. Chen, and L. C. Chen, “Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures,” Nat. Nanotechnol.2(12), 770–774 (2007).
[CrossRef] [PubMed]

Opt. Express (2)

Opt. Lett. (1)

Sol. Energy Mater. Sol. Cells (2)

D. Bouhafs, A. Moussi, A. Chikouche, and J. Ruiz, “Design and simulation of antireflection coating systems for optoelectronic devices: Application to silicon solar cells,” Sol. Energy Mater. Sol. Cells52(1-2), 79–93 (1998).
[CrossRef]

D. J. Aiken, “High performance anti-reflection coatings for broadband multi-junction solar cells,” Sol. Energy Mater. Sol. Cells64(4), 393–404 (2000).
[CrossRef]

Other (1)

Y. K. Ee, P. Kumnorkaew, H. Tong, R. A. Arif, J. F. Gilchrist, and N. Tansu, “Enhancement of Light Extraction Efficiency of InGa Quantum Wells Light-Emitting Diodes with Polydimethylsiloxane Concave Microstructures,” Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting Xiii 7231 (2009).

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Figures (5)

Fig. 1
Fig. 1

The schematic fabrication flow for c-Si nanopillar arrays (NPA) solar cell with CdS quantum dots (QDs) layers: (a) spin-cast of nearly-close-packed polystyrene nanospheres monolayer, (b) resulting NPA after dry etching, (c) diffusion of an N-type layer. (d) SiNx deposition and screen printing of the front and back electrodes, and then spin CdS QDs layers on the cell.

Fig. 2
Fig. 2

(a) A cross-sectional view of scanning electron microscopic (SEM) image of the c-Si nanopillar arrays. (b) A cross-sectional TEM image of edge of metal contact after the integration CdS QDs layers, the size of CdS QDs layers is about 6 nm. The element of CdS QDs layers was analyzed by Energy Dispersive Spectrometer (EDS) (insets of under corner).

Fig. 3
Fig. 3

(a) UV-Vis absorbance (red) and photoluminescence (blue) spectra of CdS QDs measure in toluene. The PLE spectrum was taken at the maximum of PL intensity (~430 nm). For the PL spectrum, the sample was excited by a light beam with 365 nm. (b) The measured reflectance spectra for cells with c-Si nanopillar arrays (NPA) with and without CdS quantum dots (QDs) layers.

Fig. 4
Fig. 4

Color online) Photovoltaic I–V characteristics of the c-Si nanopillar arrays (NPA) solar cell with and without CdS quantum dots (QDs) layers.

Fig. 5
Fig. 5

(a) Measurement of External quantum efficiency of the fabricated c-Si nanopillar arrays (NPA) solar cell with and without CdS QDs layers. (b) Peak (at ~335 nm wavelengths) of short-wavelength enhancement of in EQE indicates photon down-conversion.

Tables (1)

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Table 1 Current-Voltage Characteristics of c-Si NPA Solar Cells with and without CdS QDs layers.

Equations (2)

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J s c = e h c × 320 n m 1100 n m λ × E Q E ( λ ) × I A M 1.5 G ( λ ) d λ
J s c , Q D s = e h c × ( 320 n m 400 n m [ 1 A ( λ ) ] × λ × E Q E ( λ ) × I A M 1.5 G ( λ ) d λ + 320 n m 400 n m A ( λ ) × λ × E Q E ( λ ) × Q Y × I A M 1.5 G ( λ ) d λ + 400 n m 1100 n m λ × E Q E ( λ ) × I A M 1.5 G ( λ ) d λ )

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