Abstract

This paper reports the possibility of a facile optical structure to realize a highly efficient monochromatic amber-emitting light-emitting diode (LED) using a powder-based phosphor-converted LED combined with a long-wave pass filter (LWPF). The capping of a blue-reflecting and amber-passing LWPF enhances both the amber emission from the silicate amber phosphor layer and the color purity due to the blocking and recycling of the pumping blue light from the InGaN LED. The enhancement of the luminous efficacy of the amber pc-LED with a LWPF (phosphor concentration 20 wt%, 39.4 lm/W) is 34% over that of an amber pc-LED without a LWPF (phosphor concentration 55 wt%, 29.4 lm/W) at 100 mA and a high color purity (> 96%) with Commission International d’Eclairage (CIE) color coordinates of x = 0.57 and y = 0.42.

© 2010 OSA

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  1. M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
    [CrossRef]
  2. R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
    [CrossRef]
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    [CrossRef]
  4. Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
    [CrossRef]
  5. Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  8. M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
    [CrossRef]
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    [CrossRef]
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  16. C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
    [CrossRef]

2010 (1)

2009 (5)

J. R. Oh, S.-H. Cho, Y.-H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[CrossRef] [PubMed]

J.-Y. Chi, J.-S. Chen, C.-Y. Liu, C.-W. Chu, and K.-H. Chiang, “Phosphor converted LEDs with omni-directional-reflector coating,” Opt. Express 17(26), 23530–23535 (2009).
[CrossRef]

W. Schnick, “Shine a light with nitrides,” Phys. Status Solidi RRL 3(7-8), A113–A114 (2009).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

2007 (1)

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

2006 (1)

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

2005 (1)

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

2004 (1)

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

2003 (3)

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
[CrossRef]

2002 (1)

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

1996 (1)

Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
[CrossRef]

Baur, J.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Bechtel, H.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

Bergbauer, W.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Chang, S.-J.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Chen, C.-H.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

Chen, J.-S.

Chi, J.-Y.

Chiang, K.-H.

Cho, S.-H.

Choi, S. Y.

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Chu, C.-W.

Coltrin, M. E.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Crawford, M. H.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Do, Y. R.

Fisher, A. J.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Hahn, B.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Hirosaki, N.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Höppe, H. A.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

Huh, Y. D.

Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
[CrossRef]

Izuno, K.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Juestel, T.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

Kameshima, M.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Kim, C. H.

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Kim, H. K.

Kim, Y.

Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
[CrossRef]

Krames, M. R.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

Kuo, C.-H.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Laubsch, A.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Lee, J.-G.

Lee, Y.-H.

Liu, C. H.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Liu, C.-Y.

Meyer, T.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Mueller, G. O.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

Mueller-Mach, R.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

Mukai, T.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Murazaki, Y.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Naitou, T.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Nanito, A.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Nankajima, T.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Oh, J. R.

Ohno, Y.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Park, H. D.

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Park, H. K.

Park, J. K.

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Park, S. H.

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Peter, M.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Phillips, J. M.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Rohwer, L. E. S.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Sabathil, M.

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Sato, S.

Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
[CrossRef]

Sato, Y.

Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
[CrossRef]

Schmidt, P.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

Schnick, W.

W. Schnick, “Shine a light with nitrides,” Phys. Status Solidi RRL 3(7-8), A113–A114 (2009).
[CrossRef]

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

Schnidt, P. J.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

Shchekin, O. B.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

Sheu, J.-K.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Shim, J. H.

Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
[CrossRef]

Simmons, J. A.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Stadler, F.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

Steigelman, O.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

Su, Y.-K.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Takahashi, N.

Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
[CrossRef]

Tamaki, H.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Trottier, T.

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

Tsai, J.-M.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Tsao, J. Y.

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Uheda, K.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Wu, L.-W.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Wu, R. K.

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Yamada, M.

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

Yamamoto, H.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Yamamoto, Y.

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

Appl. Phys. Lett. (1)

J. K. Park, C. H. Kim, S. H. Park, H. D. Park, and S. Y. Choi, “Application of strontium silicate yellow phosphor for white light-emitting diodes,” Appl. Phys. Lett. 84(10), 1647–1649 (2004).
[CrossRef]

Electrochem. Solid-State Lett. (1)

K. Uheda, N. Hirosaki, Y. Yamamoto, A. Nanito, T. Nankajima, and H. Yamamoto, “Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes,” Electrochem. Solid-State Lett. 9(4), H22–H25 (2006).
[CrossRef]

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

R. Mueller-Mach, G. O. Mueller, M. R. Krames, and T. Trottier, “High-Power Phosphor-Converted Light-Emitting Diodes Based on III-Nitrides,” IEEE J. Sel. Top. Quantum Electron. 8(2), 339–345 (2002).
[CrossRef]

J. Electrochem. Soc. (1)

Y. D. Huh, J. H. Shim, Y. Kim, and Y. R. Do, “Optical properties of three-band white light emitting diodes,” J. Electrochem. Soc. 150(2), H57–H60 (2003).
[CrossRef]

Jpn. J. Appl. Phys. (3)

Y. Sato, N. Takahashi, and S. Sato, “Full-color fluorescent display devices using a Near-UV light-emitting diode,” Jpn. J. Appl. Phys. 35(Part 2, No. 7A), L838–L839 (1996).
[CrossRef]

M. Yamada, T. Naitou, K. Izuno, H. Tamaki, Y. Murazaki, M. Kameshima, and T. Mukai, “Red-enhanced white-light-emitting diode using a new red phosphor,” Jpn. J. Appl. Phys. 42(Part 2, No.1A/B), L20–L23 (2003).
[CrossRef]

C.-H. Kuo, J.-K. Sheu, S.-J. Chang, Y.-K. Su, L.-W. Wu, J.-M. Tsai, C. H. Liu, and R. K. Wu, “n-UV+Blue/Green/Red white light emitting diode lamps,” Jpn. J. Appl. Phys. 42(Part 1, No. 4B), 2284–2287 (2003).
[CrossRef]

Laser Photon. Rev. (1)

J. M. Phillips, M. E. Coltrin, M. H. Crawford, A. J. Fisher, M. R. Krames, R. Mueller-Mach, G. O. Mueller, Y. Ohno, L. E. S. Rohwer, J. A. Simmons, and J. Y. Tsao, “Research challenge to ultra-efficient inorganic solid-state lighting,” Laser Photon. Rev. 1(4), 307–333 (2007).
[CrossRef]

Opt. Express (3)

Phys. Status Solidi A (2)

R. Mueller-Mach, G. O. Mueller, M. R. Krames, H. A. Höppe, F. Stadler, W. Schnick, T. Juestel, and P. Schmidt, “Highly efficient all-nitride phosphor-converted white light emitting diode,” Phys. Status Solidi A 202(9), 1727–1732 (2005).
[CrossRef]

M. Peter, A. Laubsch, W. Bergbauer, T. Meyer, M. Sabathil, J. Baur, and B. Hahn, “New developments in green LEDs,” Phys. Status Solidi A 206(6), 1125–1129 (2009).
[CrossRef]

Phys. Status Solidi RRL (2)

R. Mueller-Mach, G. O. Mueller, M. R. Krames, O. B. Shchekin, P. J. Schnidt, H. Bechtel, C.-H. Chen, and O. Steigelman, “All-nitride monochromatic amber-emitting phosphor-converted light-emitting diodes,” Phys. Status Solidi RRL 3(7-8), 215–217 (2009).
[CrossRef]

W. Schnick, “Shine a light with nitrides,” Phys. Status Solidi RRL 3(7-8), A113–A114 (2009).
[CrossRef]

Other (1)

H. A. Macleod, Thin-Film Optical Filters 3rd Edition (Institute of Physics Publishing, 2003).

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Figures (9)

Fig. 1
Fig. 1

Schematic diagram of the silicate amber phosphor-coated LED device structure with the embedded amber light passing through and blue light reflecting from the dielectric multilayer coated glass substrate. The enlarged side view shows the mechanism of the enhancement of the forward emission from the amber phosphor layer and the basic sequence of the modified quarter-wave stacks of the LWPF.

Fig. 2
Fig. 2

(a) Comparison of the simulated transmittance of a conventional LWPF (Red line) and the modified LWPF (blue line). (b) Comparison of the simulated reflectance of the modified LWPF with different numbers of [0.5H(L)0.5H] m stacks.

Fig. 3
Fig. 3

Measured transmittance spectra of the three different LWPFs [0.5H(L)0.5H]9 (L: low index layer, SiO2, H: high index layer, TiO2) on glass substrates, and the normalized electroluminescent (EL) spectrum of pc-LED with silicate amber powder phosphor (phosphor concentration 20 wt%). The inset shows a side-view scanning electron microscopy (SEM) image of the nine periods of the [0.5H(L)0.5H] films coated onto a glass substrate.

Fig. 4
Fig. 4

(a) The equal-power spectra of a conventional blue-pumped pc-LED and pc-LEDs with three types of LWPFs (phosphor concentration: 5 wt%). The enlarged view shows the spectra at the amber region. The black line shows the spectra of only the conventional blue LED. (b) The luminous efficacy of pc-LEDs (5 wt%) of a conventional blue-pumped pc-LED and pc-LEDs with three types of LWPFs.

Fig. 5
Fig. 5

(a) The relative luminous efficacies and the relative quantum efficiencies of the conventional pc-LED and pc-LED with A3 LWPF as a function of the phosphor concentration in paste. (b) The relative blue and amber intensities of the emission spectra of the conventional pc-LED and pc-LED with A3 LWPF as a function of the phosphor concentration. All measurements were performed under equal-current (100 mA).

Fig. 6
Fig. 6

(a) Comparison of the color purity of an silicate pc-LED with and without LWPF A3 as a function of the phosphor concentration. The inset shows the EL spectrum of the A3 LWPF capped powder-based silicate pc-LED (20 wt %). (b) 1931 CIE color coordinates of a pc-LED without a LWPF (squares) and a pc-LED with A3 LWPF (stars) as a function of the phosphor concentration (5 wt% - 20 wt%). The inset shows an image of the pc-LED without a LWPF (left) and with a LWPF (right). All measurements were performed under equal-current (100 mA).

Fig. 7
Fig. 7

(a). The relative quantum efficiencies of a conventional blue LED (InGaN LED) and the fabricated amber pc-LED with a LWPF (20 wt%) as a function of the driving current. (b) Comparison of the luminous efficacy of a blue LED and an amber pc-LED with a LWPF as a function of the driving current. (c) Spectra comparing a blue LED and an amber pc-LED as a function of the driving current (50, 350 and 450 mA, dc-operation).

Fig. 8
Fig. 8

Comparison of the angular-radiation patterns of the blue LED and the amber pc-LED with the LWPF

Fig. 9
Fig. 9

Comparison of the luminous efficacy of the direct-emitting amber pc-LED (20 wt%) and the amber pc-LED with LWPF (55 wt %) as a function of (a) current density and (b) ambient temperature.

Tables (1)

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Table 1 The thickness of the three types of LWPF multi-layer stacks

Equations (1)

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G [ 0.5 H ( L ) 0.5 H ] m A

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