Development of high luminous efficacy red-emitting phosphor-in-glass for high-power LED lighting systems using our original low Tg and Ts glass

被引：7
|
作者：
Park, Young Ji [1 ,2 ]
Jeong, Gyu Jin [1 ,2 ]
Kim, Jin Ho [1 ]
Lee, Youngjin [1 ]
Kim, Sun Woog [1 ]
Kim, Cheol Jin [2 ]
Hwang, Jonghee [1 ]
机构：
[1] Korea Inst Ceram Engn & Technol, Elect Convergence Mat Div, Opt & Elect Component Mat Ctr, Jinju 52831, South Korea
[2] Gyeongsang Natl Univ, Div Mat Sci & Engn & Convergence Technol, Jinju 52828, South Korea
来源：
OPTICS LETTERS | 2019年 / 44卷 / 24期
关键词：
LUMINESCENCE PROPERTIES; CRYSTAL-STRUCTURE; THERMAL-TREATMENT; WHITE; DEGRADATION; MECHANISM; DIODES; CE3+; EU2+;
D O I：
10.1364/OL.44.006057
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Red-emitting phosphor-in-glass (PiG) materials with a high luminescence efficiency were developed by co-firing commercial red-emitting (Sr, Ca)AlSiN3:Eu2+ (SCASN) phosphor and our original glass fits with a composition of Li2O-Na2O-ZnO-Al2O3-B2O3-P2O5, which has a low Tg (271 degrees C) and Ts (380 degrees C) temperatures. By optimizing the sintering temperature and the content of the phosphor, the highest luminous efficacy was obtained for the 3 wt.% SCASN-based PiG sintered at 400 degrees C, which showed a luminous efficacy of 25 lm/Wrad by combining the PiG materials with a blue light-emitting diode (LED) chip-on-board (COB, incident power = 100 mA). The internal quantum efficiency of this sample under excitation at 450 nm was 53%. The PiG-based LED maintained a high luminous efficacy when the incident power of the blue COB increased up to 5.5 W (47 lm). (C) 2019 Optical Society of America
引用
收藏
页码：6057 / 6060
页数：4
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