White-light-emitting diodes (WLEDs) were fabricated by combining a yellow phosphor with a blue light-emitting diode (LED) ( chip) or a near ultraviolet (n-UV) LED ( chip), respectively. Color temperature of -based WLEDs could be tuned from 6500 to (blue LED pumping) and from 4900 to (n-UV LED pumping) without mixing with other phosphors. The blue LED-pumped WLED showed excellent white light (luminous efficiency=, ) at . This WLED showed a stable color coordinates property against an increase of the forward current. An n-UV LED-pumped WLED also showed bright white light (, ) at .
© 2007 Optical Society of AmericaFull Article | PDF Article
Chien-Hao Huang and Teng-Ming Chen
Opt. Express 18(5) 5089-5099 (2010)
Lei Wang, Xia Zhang, Zhendong Hao, Yongshi Luo, Xiao-jun Wang, and Jiahua Zhang
Opt. Express 18(24) 25177-25182 (2010)
Yi-Chen Chiu, Chien-Hao Huang, Te-Ju Lee, Wei-Ren Liu, Yao-Tsung Yeh, Shyue-Ming Jang, and Ru-Shi Liu
Opt. Express 19(S3) A331-A339 (2011)