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Based on Mie scattering theory, the phosphor particle's scattering effect were simulated including light excitation and absorption. The light intensity proportion changes of forward and backward scattering light with different white light emitting diode (LED) color temperature were calculated. We also analyzed the phosphor particle size effecting the luminous flux of white LED and light color distribution of angle. Devices' excitation and emission spectrums used in our simulation were real measured spectrums of the material, rather than assuming a single spectrum. Our investigation discloses that when a conformal phosphor layer was adapted, phosphor particle diameter of 0.5 μm, makes maximum luminous flux and phosphor particles smaller, light color distribution of angel is better. While for given package structure, the best spatial color uniformity can be achieved with a phosphor layer thickness of 0.8 mm.
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Keywords:
- package of high power light emitting diode /
- phosphor /
- luminous flux /
- light color distribution
[1] Qian K Y, Hu F, Wu H Y 2005 Semicond. Optoelectron. 26 118 (in Chinese) [钱可元, 胡飞, 吴慧颖 2005 半导体光电 26 118]
[2] Guo X Q 2007 M. S. Dissertation (Jinan: Shandong University) (in Chinese) [郭学庆 2007 硕士学位论文 (济南:山东大学)]
[3] Xiang J S, He J H 2007 Appl. Opt. 28 363 (in Chinese) [项建胜, 何俊华 2007 应用光学 28 363]
[4] Shen J Q, Liu L 2005 China Powder Sci. Tech. 11 1 (in Chinese) [沈建琪, 刘蕾 2005 中国粉体技术 11 1]
[5] Nguyen T, Jiun P Y, Shi F G 2009 J. Lightwave Tech. 27 5145
[6] Christian S, Joachim R K, Paul H, Peter P, Marko S, Stefan T, Franz P W 2009 IEEE Sel. Top. Quantum Electron. 15 4
[7] Luo H, Jong K K, Fred S, Jaehee C, Cheolsoo S, Yongjo P 2005 Appl. Phys. 86 243505
[8] Yamada K, Imai Y, Ishii K 2003 J. Light Vis. Env. 27 10
[9] Narendran N, Gu Y, Freyssinier-Nova J P, Zhu Y 2005 Phys. Stat. Sol. A 202 R60
[10] Borbély A, Johnson S G 2004 Proceedings of the Fourth International Conference on Solid State Lighting (Bellingham: SPIE) p266
[11] Borbély A, Johnson S G 2003 Proceedings of the Third International Conference on Solid State Lighting (Bellingham: SPIE) pp301-308
[12] Kim J K, Luo H, Schubert E F, Cho J, Sone C, Park Y 2005 Jpn. J. Appl. Phys. 44 649
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[1] Qian K Y, Hu F, Wu H Y 2005 Semicond. Optoelectron. 26 118 (in Chinese) [钱可元, 胡飞, 吴慧颖 2005 半导体光电 26 118]
[2] Guo X Q 2007 M. S. Dissertation (Jinan: Shandong University) (in Chinese) [郭学庆 2007 硕士学位论文 (济南:山东大学)]
[3] Xiang J S, He J H 2007 Appl. Opt. 28 363 (in Chinese) [项建胜, 何俊华 2007 应用光学 28 363]
[4] Shen J Q, Liu L 2005 China Powder Sci. Tech. 11 1 (in Chinese) [沈建琪, 刘蕾 2005 中国粉体技术 11 1]
[5] Nguyen T, Jiun P Y, Shi F G 2009 J. Lightwave Tech. 27 5145
[6] Christian S, Joachim R K, Paul H, Peter P, Marko S, Stefan T, Franz P W 2009 IEEE Sel. Top. Quantum Electron. 15 4
[7] Luo H, Jong K K, Fred S, Jaehee C, Cheolsoo S, Yongjo P 2005 Appl. Phys. 86 243505
[8] Yamada K, Imai Y, Ishii K 2003 J. Light Vis. Env. 27 10
[9] Narendran N, Gu Y, Freyssinier-Nova J P, Zhu Y 2005 Phys. Stat. Sol. A 202 R60
[10] Borbély A, Johnson S G 2004 Proceedings of the Fourth International Conference on Solid State Lighting (Bellingham: SPIE) p266
[11] Borbély A, Johnson S G 2003 Proceedings of the Third International Conference on Solid State Lighting (Bellingham: SPIE) pp301-308
[12] Kim J K, Luo H, Schubert E F, Cho J, Sone C, Park Y 2005 Jpn. J. Appl. Phys. 44 649
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