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

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]
3. 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]
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]
6. 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]
7. 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]
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]
9. 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]
10. 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]
11. 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]
12. S.-H. Cho, J. R. Oh, H. K. Park, H. K. Kim, Y.-H. Lee, J.-G. Lee, and Y. R. Do, “Highly efficient phosphor-converted white organic light-emitting diodes with moderate microcavity and light-recycling filters,” Opt. Express 18(2), 1099–1104 (2010). [CrossRef] [PubMed]
13. 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]
14. H. A. Macleod, Thin-Film Optical Filters 3rd Edition (Institute of Physics Publishing, 2003).
15. W. Schnick, “Shine a light with nitrides,” Phys. Status Solidi RRL 3(7-8), A113–A114 (2009). [CrossRef]
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]

Appl. Phys. Lett.

• 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.

• 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.

• 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.

• 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.

• 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.

• 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

• 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]
• 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]
• S.-H. Cho, J. R. Oh, H. K. Park, H. K. Kim, Y.-H. Lee, J.-G. Lee, and Y. R. Do, “Highly efficient phosphor-converted white organic light-emitting diodes with moderate microcavity and light-recycling filters,” Opt. Express 18(2), 1099–1104 (2010). [CrossRef] [PubMed]

Phys. Status Solidi 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]
• 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

• 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

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

Click here to see a list of articles that cite this paper

Related Journal Articles

• Highly efficient phosphor-converted white organic light-emitting diodes with moderate microcavity and light-recycling filters (OE)
• The realization of a whole palette of colors in a green gap by monochromatic phosphor-converted light-emitting diodes (OE)
• New paradigm of multi-chip white LEDs: combination of an InGaN blue LED and full down-converted phosphor-converted LEDs (OE)
• Highly efficient full-color display based on blue LED backlight and electrochromic light-valve coupled with front-emitting phosphors (OE)
• Highly-efficient, tunable green, phosphor-converted LEDs using a long-pass dichroic filter and a series of orthosilicate phosphors for tri-color white LEDs (OE)

Related Conference Papers

• Optical Design and Simulation for Dual-Wavelength LEDs in Solid State Lighting
• Electroluminescence Refrigeration in Semiconductors
• Electroluminescence Refrigeration in Semiconductors
• Photonic Crystal GaN Light Emitting Diode
• Parametric Design of Non-Imaging Collimators