Abstract

We fabricated a phosphor-conversion white light emitting diode (PC-WLED) using a thin-film flip-chip GaN LED with a roughened u-GaN surface (TFFC-SR-LED) that emits blue light at 450 nm wavelength with a conformal phosphor coating that converts the blue light into yellow light. It was found that the TFFC-SR-LED with the thin-film substrate removal process and surface roughening exhibits a power enhancement of 16.1% when compared with the TFFC-LED without a sapphire substrate. When a TFFC-SR-LED with phosphors on a Cu-metal packaging-base (TFFC-SR-Cu-WLED) was operated at a forward-bias current of 350 mA, luminous flux and luminous efficacy were increased by 17.8 and 11.9%, compared to a TFFC-SR-LED on a Cup-shaped packaging-base (TFFC-SR-Cup-WLED). The angular correlated color temperature (CCT) deviation of a TFFC-SR-Cu-WLED reaches 77 K in the range of −70° to + 70° when the average CCT of white LEDs is around 4300 K. Consequently, the TFFC-SR-LED in a conformal coating phosphor structure on a Cu packaging-base could not only increase the luminous flux output, but also improve the angular-dependent CCT uniformity, thereby reducing the yellow ring effect.

© 2014 Optical Society of America

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References

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  1. E. F. Schubert and J. K. Kim, “Solid-state light sources getting smart,” Science 308(5726), 1274–1278 (2005).
    [Crossref] [PubMed]
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    [Crossref]
  3. H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
    [Crossref] [PubMed]
  4. R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
    [Crossref]
  5. H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
    [Crossref] [PubMed]
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    [Crossref]
  7. Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
    [Crossref]
  8. R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett. 23(22), 1673–1675 (2011).
    [Crossref]
  9. N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
    [Crossref]
  10. H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, and S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
    [Crossref] [PubMed]
  11. H. T. Huang, C. C. Tsai, and Y. P. Huang, “Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs,” Opt. Express 18(102), A201–A206 (2010).
    [Crossref] [PubMed]
  12. H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
    [Crossref]
  13. M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
    [Crossref]
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    [Crossref]
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    [Crossref]
  16. H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
    [Crossref]
  17. J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
    [Crossref]
  18. R. H. Horng, S. H. Chuang, C. H. Tien, S. C. Lin, and D. S. Wuu, “High performance GaN-based flip-chip LEDs with different electrode patterns,” Opt. Express 22(S3Suppl 3), A941–A946 (2014).
    [Crossref] [PubMed]
  19. J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
    [Crossref]
  20. L. Wang, P. F. Gu, and S. Z. Jin, “Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal,” Opt. Lett. 34(3), 301–303 (2009).
    [Crossref] [PubMed]
  21. R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
    [Crossref]

2014 (1)

2013 (1)

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

2012 (2)

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, and S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[Crossref] [PubMed]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

2011 (2)

R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett. 23(22), 1673–1675 (2011).
[Crossref]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

2010 (4)

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

H. T. Huang, C. C. Tsai, and Y. P. Huang, “Conformal phosphor coating using pulsed spray to reduce color deviation of white LEDs,” Opt. Express 18(102), A201–A206 (2010).
[Crossref] [PubMed]

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

2009 (4)

L. Wang, P. F. Gu, and S. Z. Jin, “Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal,” Opt. Lett. 34(3), 301–303 (2009).
[Crossref] [PubMed]

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Prospects for LED lighting,” Nat. Photonics 3(4), 180–182 (2009).
[Crossref]

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

2008 (1)

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

2006 (1)

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

2005 (4)

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
[Crossref]

E. F. Schubert and J. K. Kim, “Solid-state light sources getting smart,” Science 308(5726), 1274–1278 (2005).
[Crossref] [PubMed]

2001 (1)

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Cao, B.

Cen, S. Y.

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

Chen, C. H.

Chen, H. C.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

Chen, J. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Chen, K. J.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

Cheng, Y. J.

Chien, S. H.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

Cho, J.

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Christenson, G.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Chu, J. T.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Chu, M. T.

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

Chuang, S. H.

DenBaars, S. P.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Prospects for LED lighting,” Nat. Photonics 3(4), 180–182 (2009).
[Crossref]

Freyssinier-Nova, J. P.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
[Crossref]

Fu, X.

Gardner, N. F.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Gotz, W.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Gu, P. F.

Gu, Y.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
[Crossref]

Hartmann, P.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Horng, R. H.

R. H. Horng, S. H. Chuang, C. H. Tien, S. C. Lin, and D. S. Wuu, “High performance GaN-based flip-chip LEDs with different electrode patterns,” Opt. Express 22(S3Suppl 3), A941–A946 (2014).
[Crossref] [PubMed]

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Hseuh, T. H.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Hsu, C. P.

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

Hu, H. L.

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

Hu, R.

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, and S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[Crossref] [PubMed]

R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett. 23(22), 1673–1675 (2011).
[Crossref]

Huang, H. T.

Huang, H. W.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Huang, S. H.

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Huang, Y. P.

Hung, C. W.

Jeon, H.

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

Jin, S. Z.

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

L. Wang, P. F. Gu, and S. Z. Jin, “Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal,” Opt. Lett. 34(3), 301–303 (2009).
[Crossref] [PubMed]

Kao, C. C.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Kern, R. S.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Kim, D. H.

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

Kim, J.

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

Kim, J. K.

E. F. Schubert and J. K. Kim, “Solid-state light sources getting smart,” Science 308(5726), 1274–1278 (2005).
[Crossref] [PubMed]

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Krames, M. R.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Kuo, H. C.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Lee, J.

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

Leising, G.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Liang, P.

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

Lin, C. C.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

Lin, M. T.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Lin, M. Y.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Lin, S. C.

Lin, Y. F.

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Liu, C. H.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Liu, S.

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, and S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[Crossref] [PubMed]

R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett. 23(22), 1673–1675 (2011).
[Crossref]

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

Liu, Z. Y.

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

Lowery, C.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Lu, T. C.

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Ludowise, M. J.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Luo, H.

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Luo, X. B.

H. Zheng, X. B. Luo, R. Hu, B. Cao, X. Fu, Y. M. Wang, and S. Liu, “Conformal phosphor coating using capillary microchannel for controlling color deviation of phosphor-converted white light-emitting diodes,” Opt. Express 20(5), 5092–5098 (2012).
[Crossref] [PubMed]

R. Hu, X. B. Luo, and S. Liu, “Study on the optical properties of conformal coating light-emitting diode by Monte Carlo simulation,” IEEE Photon. Technol. Lett. 23(22), 1673–1675 (2011).
[Crossref]

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

Martin, P. S.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Nakamura, S.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Prospects for LED lighting,” Nat. Photonics 3(4), 180–182 (2009).
[Crossref]

Narendran, N.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
[Crossref]

O’Shea, J. J.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Pachler, P.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Park, Y.

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Pimputkar, S.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Prospects for LED lighting,” Nat. Photonics 3(4), 180–182 (2009).
[Crossref]

Schubert, E. F.

E. F. Schubert and J. K. Kim, “Solid-state light sources getting smart,” Science 308(5726), 1274–1278 (2005).
[Crossref] [PubMed]

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Schweighart, M.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Shen, Y. C.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Sher, C. W.

Shih, M. H.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

Sommer, C.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Sone, C.

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

Speck, J. S.

S. Pimputkar, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Prospects for LED lighting,” Nat. Photonics 3(4), 180–182 (2009).
[Crossref]

Steigerwald, D. A.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Stockman, S. A.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Subramanya, S.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Sun, C. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Tai, K. Y.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Tai, S. C.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Tasch, S.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Tien, C. H.

Tsai, C. C.

Tsai, H. H.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

Tsai, Y. J.

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

Tsai, Y. L.

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

Wang, C. H.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

Wang, K.

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

Wang, L.

Wang, S. C.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Wang, Y. M.

Wen, K. S.

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Wenzl, F. P.

C. Sommer, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch, G. Leising, and F. P. Wenzl, “A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources,” Opt. Mater. 31(6), 837–848 (2009).
[Crossref]

Wierer, J. J.

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Wuu, D. S.

R. H. Horng, S. H. Chuang, C. H. Tien, S. C. Lin, and D. S. Wuu, “High performance GaN-based flip-chip LEDs with different electrode patterns,” Opt. Express 22(S3Suppl 3), A941–A946 (2014).
[Crossref] [PubMed]

R. H. Horng, H. L. Hu, M. T. Chu, Y. L. Tsai, Y. J. Tsai, C. P. Hsu, and D. S. Wuu, “Performance of flip-chip thin-film GaN light-emitting diodes with and without patterned sapphires,” IEEE Photon. Technol. Lett. 22(8), 550–552 (2010).
[Crossref]

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Yeh, C. C.

K. J. Chen, H. C. Chen, C. C. Lin, C. H. Wang, C. C. Yeh, H. H. Tsai, S. H. Chien, M. H. Shih, and H. C. Kuo, “An investigation of the optical analysis in white light-emitting diodes with conformal and remote phosphor structure,” J. Disp. Technol. 9(11), 915–920 (2013).
[Crossref]

H. C. Chen, K. J. Chen, C. H. Wang, C. C. Lin, C. C. Yeh, H. H. Tsai, M. H. Shih, H. C. Kuo, and T. C. Lu, “A novel randomly textured phosphor structure for highly efficient white light-emitting diodes,” Nanoscale Res. Lett. 7(188), 1–8 (2012).
[Crossref] [PubMed]

H. C. Kuo, C. W. Hung, H. C. Chen, K. J. Chen, C. H. Wang, C. W. Sher, C. C. Yeh, C. C. Lin, C. H. Chen, and Y. J. Cheng, “Patterned structure of remote phosphor for phosphor-converted white LEDs,” Opt. Express 19(S4Suppl 4), A930–A936 (2011).
[Crossref] [PubMed]

Yen, K. W.

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

Ying, S. P.

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

Yu, C. C.

H. W. Huang, J. T. Chu, C. C. Kao, T. H. Hseuh, T. C. Lu, H. C. Kuo, S. C. Wang, and C. C. Yu, “Enhanced light output of an InGaN/GaN light emitting diode with a nano-roughened p-GaN surface,” Nanotechnology 16(9), 1844–1848 (2005).
[Crossref]

Yu, R. Y.

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

Zheng, H.

Zhu, Y.

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, and Y. Zhu, “Extracting phosphor-scattered photons to improve white LED efficiency,” Phys. Status Solidi A 202(6), R60–R62 (2005).
[Crossref]

Appl. Phys. Lett. (2)

H. Luo, J. K. Kim, E. F. Schubert, J. Cho, C. Sone, and Y. Park, “Analysis of high-power packages for phosphor-based white-light-emitting diodes,” Appl. Phys. Lett. 86(24), 243505 (2005).
[Crossref]

J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y. C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Gotz, N. F. Gardner, R. S. Kern, and S. A. Stockman, “High-power AlGaInN flip-chip light-emitting diodes,” Appl. Phys. Lett. 78(22), 3379 (2001).
[Crossref]

Curr. Appl. Phys. (1)

J. Lee, D. H. Kim, J. Kim, and H. Jeon, “GaN-based light-emitting diodes directly grown on sapphire substrate with holographically generated two-dimensional photonic crystal patterns,” Curr. Appl. Phys. 9(3), 633–635 (2009).
[Crossref]

IEEE Photon. Technol. Lett. (6)

M. T. Lin, S. P. Ying, M. Y. Lin, K. Y. Tai, S. C. Tai, C. H. Liu, J. C. Chen, and C. C. Sun, “Ring remote phosphor structure for phosphor-converted white LEDs,” IEEE Photon. Technol. Lett. 22(8), 574–576 (2010).
[Crossref]

S. H. Huang, R. H. Horng, K. S. Wen, Y. F. Lin, K. W. Yen, and D. S. Wuu, “Improved Light extraction of nitride-based flip-chip light-emitting diodes via sapphire shaping and texturing,” IEEE Photon. Technol. Lett. 18(24), 2623–2625 (2006).
[Crossref]

R. Y. Yu, S. Z. Jin, S. Y. Cen, and P. Liang, “Effect of the phosphor geometry on the luminous flux of phosphor-converted light-emitting diodes,” IEEE Photon. Technol. Lett. 22(23), 1765–1767 (2010).
[Crossref]

Z. Y. Liu, S. Liu, K. Wang, and X. B. Luo, “Optical analysis of color distribution in white LEDs with various packaging methods,” IEEE Photon. Technol. Lett. 20(24), 2027–2029 (2008).
[Crossref]

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Figures (7)

Fig. 1
Fig. 1 Schematic diagrams of three kinds of FCLEDs structure: (a) FC-LED, (b) TFFC-LED, and (c) TFFC-SR-LED.
Fig. 2
Fig. 2 (a) The completed structure of the TFFC-SR-LED with conformal phosphor coating. Optical micrographs of the (b) TFFC-SR-Cup-WLED, and (c) TFFC-SR-Cu-WLED.
Fig. 3
Fig. 3 I-V characteristics of three types FCLEDs. The inset is the reverse I-V characteristics for these samples.
Fig. 4
Fig. 4 Light output powers and light extraction efficiencies as functions of injection current for three types FC-LEDs (before encapsulation). The insets present the surface morphologies of TFFC-LED before and after surface roughening.
Fig. 5
Fig. 5 (a) Comparison of CCT uniformity as functions of injection current (50-350 mA) and (b) the angular-dependent CCT for the TFFC-SR-Cup-WLED and TFFC-SR-Cu-WLED.
Fig. 6
Fig. 6 (a) Luminous flux and luminous efficacy of the TFFC-SR-Cup-WLED and TFFC-SR-Cu-WLED driven at currents from 50 to 350 mA, and (b) Emission spectra at 350 mA.
Fig. 7
Fig. 7 CCT uniformity comparison of light spot images for the TFFC-SR-Cup-WLED and TFFC-SR-Cu-WLED [(a) and (b)], and schematic diagrams of both types of WLEDs structures [(c) and (d)].

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