OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 2 — Jan. 10, 2011
  • pp: 177–182

Chromaticity stability of phosphor-converted white light-emitting diodes with an optical filter

Jung-Chieh Su, Siao-Fang Song, and Hung-Shing Chen  »View Author Affiliations


Applied Optics, Vol. 50, Issue 2, pp. 177-182 (2011)
http://dx.doi.org/10.1364/AO.50.000177


View Full Text Article

Enhanced HTML    Acrobat PDF (682 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The thermal stability of blue LEDs and yellow YAG phosphor for blue-pumped white LEDs is critical to the performance of white LEDs, including the color properties and luminous efficacy. To investigate the thermal effect on the color properties of emitted white light, the junction temperature of the excitation blue LED was raised by increasing the supplied current. However, by choosing an optical filter with the appropriate transmittance spectrum for processing a portion of the blue light output and reexciting the secondary yellow emission, we observed a reduction in color instability and lower color temperature across the current range of 20 200 mA . Moreover, the color temperature distribution was improved.

© 2011 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Optical Devices

History
Original Manuscript: August 19, 2010
Revised Manuscript: November 6, 2010
Manuscript Accepted: November 16, 2010
Published: January 7, 2011

Citation
Jung-Chieh Su, Siao-Fang Song, and Hung-Shing Chen, "Chromaticity stability of phosphor-converted white light-emitting diodes with an optical filter," Appl. Opt. 50, 177-182 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-2-177


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. A. Michiue, T. Miyoshi, T. Yanamoto, T. Kozaki, S.-I. Nagahama, Y. Narukawa, M. Sano, T. Yamada, and T. Mukai, “Recent development of nitride LEDs and LDs,” Proc. SPIE 7216, 72161Z (2009). [CrossRef]
  2. 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, 7450–7457 (2009). [CrossRef] [PubMed]
  3. H. S. Jang, Y. H. Won, and D. Y. Jeon, “Improvement of electroluminescent property of blue LED coated with highly luminescent yellow-emitting phosphors,” Appl. Phys. B 95, 715–720 (2009). [CrossRef]
  4. C. C. Chiang, M. S. Tsai, and M. H. Hon, “Synthesis and photoluminescent properties of Ce3+ doped terbium aluminum garnet phosphors,” J. Alloys Compd. 431, 298–302 (2007). [CrossRef]
  5. Y. Cong, B. Li, S. Yue, Y. Liu, W. Li, and X.-J. Wang, “Characterization and photoluminescence properties of Eu3+ doped 3CdO-Al2O3-8SiO2 amorphous system for white light-emitting diodes,” J. Phys. Chem. C 113, 493–495 (2009). [CrossRef]
  6. C. C. Tsai, Y. C. Hsu, M. H. Chen, Y. T. Lo, Y. J. Lin, J. H. Kuang, H. L. Hu, S. B. Huang, C. W. Lee, Y. I. Su, and W. H. Cheng, “Decay of radiation pattern and spectrum of high-power LED modules in aging test,” in Proceedings of the IEEE Conference on Lasers and Electro-Optics (IEEE, 2008), pp. 658–659.
  7. S. Fujita, A. Sakamoto, and S. Tanabe, “Luminescence characteristics of YAG glass-ceramic phosphor for white LED,” IEEE J. Sel. Top. Quantum Electron. 14, 1387–1391 (2008). [CrossRef]
  8. R. Withnall, J. Silver, and A. Lipman, “Measurements of luminous efficiencies of conversion phosphors for blue emitting LEDs,” in Proceedings of the 13th International Display Workshops (ITE, 2006), pp. 431–432.
  9. P. Schlotter, J. Baur, C. Hielscher, M. Kunzer, H. Obloh, R. Schmidt, and J. Schneider, “Fabrication and characterization of GaN/InGaN/AlGaN double heterostructure LEDs and their application in luminescence conversion LEDs,” Mater. Sci. Eng. B 59, 390–394 (1999). [CrossRef]
  10. Y. Li, M. G. Brown, I. Eliashevich, T. DiCarlo, C. Tran, R. F. Karlicek, Jr., R. A. Stall, L. A. Koszi, Y. Lu, and H. Shen, “Fabrication and characterization of GaN-based blue light-emitting diodes,” Proc. SPIE 3279, 2–7 (1998). [CrossRef]
  11. T. Mukai, M. Yamada, and S. Nakamura, “InGaN-based uv/blue/green/amber/red LEDs,” Proc. SPIE 3621, 2–13 (1999). [CrossRef]
  12. Y. Gu, N. Narendran, T. Dong, and H. Wu, “Spectral and luminous efficacy change of high-power LEDs under different dimming methods,” Proc. SPIE 6337, 63370J (2006). [CrossRef]
  13. Z. Gong, S. Jin, Y. Chen, J. McKendry, D. Massoubre, I. M. Watson, E. Gu, and M. D. Dawson, “Size-dependent light output, spectral shift, and self-heating of 400 nm InGaN light-emitting diodes,” J. Appl. Phys. 107, 013103 (2010). [CrossRef]
  14. Y. Zhang, L. Li, X. Zhang, and Q. Xi, “Temperature effects on photoluminescence of YAG:Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26, 446–449 (2008). [CrossRef]
  15. N. Ohta and A. R. Robertson, Colorimetry (Wiley, 2006).
  16. N. Nepal, J. Li, M. L. Nakarmi, J. Y. Lin, and H. X. Jiang, “Temperature and compositional dependence of the energy band gap of AlGaN alloys,” Appl. Phys. Lett. 87, 242104(2005). [CrossRef]
  17. Y. P. Varshni, “Temperature dependence of the energy gap in semiconductors,” Physica 34, 149–154 (1967). [CrossRef]
  18. B.-J. Pong, C.-H. Chen, S.-H. Yen, J.-F. Hsu, C.-J. Tun, Y.-K. Kuo, C.-H. Kuo, and G.-C. Chi, “Abnormal blue shift of InGaN micro-size light emitting diodes,” Solid-State Electron. 50, 1588–1594 (2006). [CrossRef]
  19. W.-J. Chen, D.-C. Kuo, C.-W. Hung, C.-C. Ke, H.-T. Shen, J.-C. Wang, Y.-F. Wu, and T.-E. Nee, “The effect of junction temperature on the optoelectrical properties of green InGaN/GaN multiple quantum well light-emitting diodes,” Proc. SPIE 6468, 64680T (2007). [CrossRef]
  20. J. Li, W. Lin, W. Yang, W. Cai, Q. Pan, X. Lin, S. Li, H. Chen, D. Liu, J. Cai, X. Yu, and J. Kang, “Design and epitaxy of structural III-nitrides,” J. Cryst. Growth 311, 478–481 (2009). [CrossRef]
  21. Z. Vaitonis, P. Vitta, and A. Zukauskas, “Measurement of the junction temperature in high-power light-emitting diodes from the high-energy wing of the electroluminescence band,” J. Appl. Phys. 103, 093110–093111 (2008). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited