Abstract
In this work, -activated (BLBO) blue-emitting phosphors were prepared, and their photoluminescence properties were studied. It was found that these phosphors can be excited over a broad excitation band range from 300 nm to 430 nm and generated a blue emission band in the 400–550 nm range with a maximum peak at 443 nm. The full width at half maximum of the blue emission band was about 68 nm. The optimal doping concentration of ions was determined to be 3 mol. %, and the phosphors possessed an internal quantum efficiency as high as 71%. Finally, by coating the phosphors with a blend of commercial red-emitting phosphors, green-emitting phosphors, and blue-emitting phosphors on a 380 nm ultraviolet light-emitting diode (LED) chip, a white LED device with a color-rendering index of and correlated color temperature of 4952 K was obtained.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Xiaoyong Huang, Shaoying Wang, Bin Li, Qi Sun, and Heng Guo
Opt. Lett. 43(6) 1307-1310 (2018)
Te-Wen Kuo, Wei-Ren Liu, and Teng-Ming Chen
Opt. Express 18(8) 8187-8192 (2010)
Hansol Lee, Seonghyeon Kim, Jong Heo, and Woon Jin Chung
Opt. Lett. 43(4) 627-630 (2018)