標題: Luminous efficiency enhancement of white light-emitting diodes by using a hybrid phosphor structure
作者: Lin, Bing-Cheng
Huang, Jhih-Kai
Chen, Kuo-Ju
Chiu, Sheng-Huan
Tu, Zong-Yi
Lin, Chien-Chung
Lee, Po-Tsung
Shih, Min-Hsiung
Wang, Mei-Tan
Hwang, Jung-Min
Kuo, Hao-Chung
光電系統研究所
光電工程學系
Institute of Photonic System
Department of Photonics
關鍵字: light-emitting diodes;GaN;phosphor
公開日期: 19-Feb-2015
摘要: This paper presents a "hybrid" structure for the coating of yellow YAG: Ce3(+) phosphor on blue GaN-based light-emitting diodes (LEDs). The luminous efficiency of the hybrid phosphor structure improved by 5.9% and 11.7%, compared with the conventional remote and conformal phosphor structures, respectively, because of the increased intensity of the yellow component. The hybrid structure also has an advantage in the phosphor usage reduction for the LEDs. Furthermore, the electric intensity of the hybrid phosphor structure was calculated for various thicknesses by conducting TFCalc32 simulation, and the enhanced utilization of blue rays was verified. Finally, the experimental results were consistent with the simulation results performed using the Monte-Carlo method. (C) 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)
URI: http://dx.doi.org/10.1117/1.JPE.5.057603
http://hdl.handle.net/11536/124570
ISSN: 1947-7988
DOI: 10.1117/1.JPE.5.057603
期刊: JOURNAL OF PHOTONICS FOR ENERGY
Volume: 5
起始頁: 0
結束頁: 0
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