Photoluminescence of Bi2+-doped BaSO4 as a red phosphor for white LEDs

被引：55
|
作者：
Cao, Renping [1 ,2 ]
Peng, Mingying [1 ,2 ]
Qiu, Jianrong [1 ,2 ]
机构：
[1] S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
[2] S China Univ Technol, Inst Opt Commun Mat, Guangzhou 510640, Guangdong, Peoples R China
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 23期
基金：
中国国家自然科学基金;
关键词：
MID-INFRARED LUMINESCENCE; EFFICIENT ENERGY-TRANSFER; EMISSION; BISMUTH; BI-5(3+); SUPERBROAD; CLUSTER; ORANGE; GREEN;
D O I：
10.1364/OE.20.00A977
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Bi2+-doped BaSO4 phosphor was synthesized in air via solid state reaction method. Three excitation bands and one emission band were observed at 260 nm (P-2(1/2) -> S-2(1/2)), 452 nm (P-2(1/2) -> P-2(3/2)(2)), 592 nm (P-2(1/2) -> P-2(3/2)(1)), and 627 nm (P-2(3/2)(1) -> P-2(1/2)), respectively. W-LEDs were demonstrated by using a blend composition of BaSO4:Bi2+ and YAG:Ce3+ phosphors pumped with a 455 nm blue LEDs chip. The results indicate that BaSO4:Bi2+ phosphor is suitable as potential red phosphor for application in W-LEDs excited with blue LEDs chip. (C) 2012 Optical Society of America
引用
收藏
页码：A977 / A983
页数：7
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