A new blue-emitting phosphor of Ce3+-activated CaLaGa3S6O for white-light-emitting diodes

被引：62

作者：

Yu, Ruijin ^{[1
]}

Wang, Jing ^{[1
]}

Zhang, Mei ^{[1
]}

Zhang, Jianhui ^{[1
]}

Yuan, Haibin ^{[1
]}

Su, Qiang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, MOE Lab Bioinorgan & Synthet Chem, State Key Lab Optoelect Mat & Technol, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2008年 / 453卷 / 4-6期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.cplett.2008.01.039

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new blue-emitting chalcogenide phosphor, Ce3+-activated CaLaGa3S6O, with a high purity crystalline was synthesized by a two-step solid-state reaction. Photoluminescence properties of CaLaGa3S6O:Ce3+ were investigated comparatively with the commercial blue-emitting phosphor BaMgAl10O17:Eu2+. It shows a more perfect and efficient broad absorption band around the 398 nm emission of the commercial near ultraviolet light-emitting diodes (LEDs), and presents a comparable blue-emitting performance. The blue light-emitting LED with the CIE chromaticity coordinates of (0.147, 0.089) was successfully fabricated by precoating CaLaGa3S6O: Ce3+ phosphor onto a 398 nm-emitting InGaN chip. All these results indicate that CaLaGa3S6O: Ce3+ is a promising blue phosphor candidate for white LEDs. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：197 / 201

页数：5

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