OSA's Digital Library

Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 9, Iss. 6 — Jun. 1, 2013
  • pp: 453–458

An Improved Slurry Method of Self-Adaptive Phosphor Coating for White pc-LED Packaging

Haibo Rao, Wei Wang, Xianlong Wan, Linsong Zhou, Junyuan Liao, Da Zhou, Qiaolin Lei, and Xuemei Wang

Journal of Display Technology, Vol. 9, Issue 6, pp. 453-458 (2013)


View Full Text Article

Acrobat PDF (686 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

For illumination-grade applications, the spatial homogeneity of the white light emitted is an important issue which is directly associated with the geometry and the composition of the color conversion layer in phosphor-converted LEDs. In order to create a phosphor coating of high quality surrounding the LED chip surface, an improved slurry method with self-exposure technique was applied and investigated. The conformal phosphor layer of self-adaptability to angular intensity distribution of LED emitting light was realized. Plasma treatment was introduced to improve the aging performance of white LEDs with this advanced slurry method. The effect of the self-adaptive coating on the improvement of angular color uniformity of white LEDs was measured and discussed.

© 2013 IEEE

Citation
Haibo Rao, Wei Wang, Xianlong Wan, Linsong Zhou, Junyuan Liao, Da Zhou, Qiaolin Lei, and Xuemei Wang, "An Improved Slurry Method of Self-Adaptive Phosphor Coating for White pc-LED Packaging," J. Display Technol. 9, 453-458 (2013)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-9-6-453


Sort:  Year  |  Journal  |  Reset

References

  1. T. Taguchi, "The light for the 21st century national project based on white light emitting diode (LED) lighting technology," Tran. Inst. Elec. Inf. Commun. Eng. C J84-C, 1040 (2001).
  2. R. M. Farrell, E. C. Young, F. Wu, S. P. DenBaars, J. S. Speck, "Materials and growth issues for high-performance nonpolar and semipolar light-emitting devices," Semicond. Sci. Technol. 27, 1-14 (2012) 024001.
  3. H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, N. Tansu, "Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells," Opt. Express 19, A991-A1007 (2011) (Suppl. 4).
  4. J. Zhang, N. Tansu, "Improvement in spontaneous emission rates for InGaN quantum wells on ternary InGaN substrate for light-emitting diodes," J. Appl. Phys. 110, 113110 (2011).
  5. H. Zhao, J. Zhang, G. Liu, N. Tansu, "Surface plasmon dispersion engineering via double-metallic Au/Ag layers for III-nitride based light-emitting diodes," Appl. Phys. Lett. 98, 151115 (2011).
  6. Y. K. Ee, J. M. Biser, W. Cao, H. M. Chan, R. P. Vinci, N. Tansu, "Metalorganic vapor phase epitaxy of III-nitride light-emitting diodes on nanopatterned AGOG sapphire substrate by abbreviated growth mode," IEEE J. Sel. Topics Quantum Electron. 15, 1066-1072 (2009).
  7. Y. K. Ee, X. Li, J. Biser, W. Cao, H. M. Chan, R. P. Vinci, N. Tansu, "Abbreviated MOVPE nucleation of III-nitride light-emitting diodes on nano-patterned sapphire source," J. Cryst. Growth 312, 1311-1315 (2010).
  8. Y. Li, S. You, M. Zhu, L. Zhao, W. Hou, T. Detchprohm, Y. Taniguchi, N. Tamura, S. Tanaka, C. Wetzel, "Defect-reduced green GaInN/GaN light-emitting diode on nanopatterned sapphire," Appl. Phys. Lett. 98, 151102-1-151102-3 (2011).
  9. X. H. Li, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, N. Tansu, "Light extraction efficiency and radiation patterns of III-nitride light-emitting diodes with colloidal microlens arrays with various aspect ratios," IEEE Photon. J. 3, 489-499 (2011).
  10. E. Rangel, E. Matioli, Y. S. Choi, C. Weisbuch, J. S. Speck, E. L. Hu, "Directionality control through selective excitation of low-order guided modes in thin-film InGaN photonic crystal light-emitting diodes," Appl. Phys. Lett. 98, 081104 (2011).
  11. Y. K. Ee, P. Kumnorkaew, R. A. Arif, H. Tang, J. F. Gilchrist, N. Tansu, "Light extraction efficiency enhancement of InGaN quantum wells light-emitting diodes with polydimethylsiloxane concave microstructures ," Opt. Expr. 17, 13747-13757 (2009).
  12. S. E. Brinkley, N. Pfaff, K. A. Denault, Z. Zhang, H. T. (Bert) Hintzen, R. Seshadri, S. Nakamura, S. P. DenBaars, "Robust thermal performance of Sr2Si5N8:Eu2+: An efficient red emitting phosphor for light emitting diode based white lighting," Appl. Phys. Lett. 99, 241106 (2011).
  13. Y. Zhang, L. Wu, M. Ji, B. Wang, Y. Kong, J. Xu, "Structure and photoluminescence properties of KSr4(BO3)3:Eu3+ red-emitting phosphor," Opt. Mater. Expr. 2, 92-102 (2012).
  14. H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, S. S. Yi, "Tunable photoluminescence properties of Eu(II)- and Sm(III)-coactivated Ca9Y(PO4)7 and energy transfer between Eu(II) and Sm(III)," Opt. Materials Expr. 2, 443-451 (2012).
  15. S. K. K. Shaat, H. C. Swart, O. M. Ntwaeaborwa, "Synthesis and characterization of white light emitting CaxSr1-xAl2O4: Tb3+, Eu3+ phosphor for solid state lighting," Opt. Materials Expr. 2, 962-968 (2012).
  16. J. Zhang, H. Zhao, N. Tansu, "Effect of crystal-field split-off hole and heavy-hole bands crossover on gain characteristics of high Al-content AlGaN quantum well lasers," Appl. Phys. Lett. 97, 111105 (2010).
  17. J. Zhang, H. Zhao, N. Tansu, "Large optical gain AlGaN-delta-GaN quantum wells laser active regions in mid- and deep-ultraviolet spectral regimes," Appl. Phys. Lett. 98, 171111 (2011).
  18. Y. Taniyasu, M. Kasu, "Polarization property of deep-ultraviolet light emission from C-plane AlN/GaN short-period superlattices," Appl. Phys. Lett. 99, 251112 (2011).
  19. G. Liu, J. Zhang, X. Li, G. S. Huang, T. Paskova, K. R. Evans, H. Zhao, N. Tansu, "Metalorganic vapor phase epitaxy and characterizations of nearly-lattice-matched AlInN alloys on GaN/sapphire templates and free-standing GaN substrates," J. Cryst. Growth 340, 66-73 (2012).
  20. C. Sommer, F. P. Wenzl, F. Reil, J. R. Krenn, P. Pachler, S. Tasch, P. Hartmann, "A comprehensive study on the parameters effecting color conversion in phosphor converted white light-emitting diodes," Proc. SPIE (2010) pp. 77840D-1-77840D-7.
  21. M. R. Krames, J. Bhat, D. Collins, N. F. Gardner, W. Gotz, C. H. Lowery, M. Ludowise, P. S. Martin, G. Mueller, R. Mueller-Mach, S. Rudaz, D. A. Steigerwald, S. A. Stockman, J. J. Wierer, "High-power III-nitride emitters for solid-state lighting," Phys. Stat. Sol. (A) 192, 237-245 (2002).
  22. K. Chen, R. Zhang, S. W. R. Lee, "Integration of phosphor printing and encapsulant dispensing processes for wafer level LED array packaging," Proc. 2010 11th Int. Conf. Electron. Packag. Technol. High Density Packag. (ICEPT-HDP 2010) (2010) pp. 1386-1392.
  23. Y. Zhu, N. Narendran, "Optimizing the performance of remote phosphor LEDs," J. Light Vis. Env. 32, 115-119 (2008).
  24. 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, Y. J. Cheng, "Patterned structure of remote phosphor for phosphor-converted white LEDs," Opt. Expr. 19, A930-A936 (2011) (S4 Suppl. 4).
  25. B. Hou, H. Rao, J. Li, "Methods of increasing luminous efficiency of phosphor-converted LED realized by conformal phosphor coating," J. Display Technol. 5, 57-60 (2009).
  26. B. Hou, H. Rao, J. Li, "Phosphor coating technique with slurry method in application of white LED," Proc. SPIE V6841, 684106-1-684106-8 (2007).
  27. K. Y. Sasaki, J. B. Talbot, "Deposition of powder phosphors for information displays," Adv. Mater. 11, 91-105 (1999).
  28. J. K. Kim, H. Luo, E. F. Schubert, J. Cho, C. Sone, Y. Park, "Strongly enhanced phosphor efficiency in GaInN white light-emitting diodes using remote phosphor configuration and diffuse reflector cup," Jap. J. Appl. Phy. 44, L649-651 (2005).

Cited By

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