標題: Improvement of light quality by DBR structure in white LED
作者: Lin, Huang-Yu
Chen, Kuo-Ju
Wang, Sheng-Wen
Lin, Chien-Chung
Wang, Kuan-Yu
Li, Jie-Ru
Lee, Po-Tsung
Shih, Min-Hsiung
Li, Xiuling
Chen, Huang-Ming
Kuo, Hao-Chung
光電系統研究所
光電工程學系
Institute of Photonic System
Department of Photonics
公開日期: 9-二月-2015
摘要: This study demonstrates the application of DBR structure into the remote phosphor structure to improve the angular correlated color temperature (CCT) deviation in white light-emitting diodes (WLEDs). In the experiment, the LED device with DBR structure yielded a higher luminous efficiency than a conventional structure. The CCT deviation can be improved from 1758K to 280K in a range of -70 to 70 degree and the luminous flux increases more than 10% due to the enhancement of the light extraction of the blue light. Moreover, the reflectance of the different DBR structures is analyzed with different angles to reveal the reasons of such improvements. As the result, this LED device with DBR structure shows the great potential to use as the next generation lighting source. (C) 2014 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.000A27
http://hdl.handle.net/11536/124334
ISSN: 1094-4087
DOI: 10.1364/OE.23.000A27
期刊: OPTICS EXPRESS
Volume: 23
起始頁: A27
結束頁: A33
顯示於類別:期刊論文