OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 301–303

Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal

Le Wang, Pei-Fu Gu, and Shang-Zhong Jin  »View Author Affiliations

Optics Letters, Vol. 34, Issue 3, pp. 301-303 (2009)

View Full Text Article

Enhanced HTML    Acrobat PDF (261 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A design for a one-dimensional photonic crystal (1D PhC) based on thin-film optics is proposed to improve the light extraction efficiency of phosphor-converted flip-chip white-light-emitting diodes (LEDs). The 1D PhC thin film consisting of alternating layers of Ti O 2 and Si O 2 is added between a phosphor layer and sapphire substrate of the LEDs. Monte Carlo simulation method is introduced to analyze performance of the proposed LEDs with a 1D PhC. Results show that the light extraction efficiency is higher than that of conventional LEDs by 16%, and the correlated color temperature becomes lower, below 4000 K . These improvements are attributed to the efficient extraction of backscattered light from the phosphor layer by using the 1D PhC thin film.

© 2009 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(230.5298) Optical devices : Photonic crystals

ToC Category:
Optical Devices

Original Manuscript: September 17, 2008
Revised Manuscript: December 5, 2008
Manuscript Accepted: December 6, 2008
Published: January 26, 2009

Le Wang, Pei-Fu Gu, and Shang-Zhong Jin, "Enhancement of flip-chip white light-emitting diodes with a one-dimensional photonic crystal," Opt. Lett. 34, 301-303 (2009)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. E. F. Schubert and J. K. Kim, Science 308, 1274 (2005). [CrossRef] [PubMed]
  2. D. A. Steigerwald, J. C. Bhat, D. Collins and R. M. Fletcher, IEEE J. Sel. Top. Quantum Electron. 8, 310 (2002). [CrossRef]
  3. J. S. Lee, J. Lee, J. Kim, and J. Jeon, IEEE Photon. Technol. Lett. 18, 1588 (2006). [CrossRef]
  4. D. S. Han, J. Y. Kim, S. I. Na, and S. H. Kim, IEEE Photon. Technol. Lett. 18, 1406 (2006). [CrossRef]
  5. J. R. Lee, S. L. Na, and J. H. Jeong, J. Electrochem. Soc. 152, G92 (2005). [CrossRef]
  6. J. K. Kim, T. Gessmann, and E. F. Schubert, Appl. Phys. Lett. 88, 013501 (2006). [CrossRef]
  7. J. K. Kim, H. Luo, and E. F. Schubert, Jpn. J. Appl. Phys. Part 1 44, L649 (2005). [CrossRef]
  8. H. Winkler, H. Enderle, C. Kuehn, and R. Petry, Proc. SPIE 6797, 0A1 (2007).
  9. S. K. Griebel, M. Richardson, K. E. Devenport, and H. S. Hinton, Proc. SPIE 3005, 254 (1997). [CrossRef]
  10. K. Yamada, Y. Imai, and K. Ishii, J. Light Visual Environ. 27, 70 (2003). [CrossRef]
  11. H. A. Macleod, Thin Film Optical Filters (McGraw-Hill, 1986). [CrossRef]
  12. S. J. Lee, Appl. Opt. 40, 1427 (2001). [CrossRef]
  13. D.-X. (Michael) Wang, I. T. Ferguson, J. A. Buck, and D. Nicol, Proc. SPIE 6327, 0Q1 (2006).
  14. P. Yeh, Optical Waves in Layered Media (Wiley, 1988).
  15. L. G. Henyey and J. L. Greenstein, Astrophys. J. 93, 70 (1941). [CrossRef]
  16. N. Ohta and A. R. Robertson, Colorimetry (Wiley, 2005). [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.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited