White-Emitting Phosphor Ca2BO3Cl:Ce3+, Eu2+ for UV Light-Emitting Diodes

被引：70

作者：

Guo, Chongfeng ^{[1
]}

Luan, Lin ^{[1
]}

Shi, Frank G. ^{[2
]}

Ding, Xu ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Univ Calif Irvine, Optoelect Packaging & Mat Labs, Irvine, CA 92697 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2009年 / 156卷 / 06期

基金：

中国国家自然科学基金;

关键词：

boron compounds; calcium compounds; cerium; europium; light emitting diodes; phosphors; photoluminescence; spectral line intensity; CALCIUM BORATE CHLORIDE; ENERGY-TRANSFER; NANOCRYSTALS; LUMINESCENCE; MN2+;

D O I：

10.1149/1.3106039

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ce3+ and Eu2+ coactivated Ca2BO3Cl phosphors exhibit two blue and yellow emission bands under the excitation of UV light. An asymmetric blue emission originates from Ce3+, whereas the yellow emission originates from Eu2+. The luminescent mechanism is explained by the resonance-type energy transfer from Ce3+ to Eu2+, and the energy-transfer efficiency is also calculated by decline and growth of their emission relative intensities. In light of the principle of energy transfer, the varied emitted color of phosphor from blue through white and finally to yellow can be achieved by properly tuning the ratio of Ce3+/Eu2+.

引用

页码：J125 / J128

页数：4

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