Energy transfer and thermal stability of Ce3+, Tb3+ co-doped Ca3Si2O4N2 phosphors for white light-emitting diodes

被引：27

作者：

Wang, Baochen ^{[1
]}

Liu, Yan-gai ^{[1
]}

Huang, Zhaohui ^{[1
]}

Fang, Minghao ^{[1
]}

机构：

[1] China Univ Geosci, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2017年 / 690卷

基金：

中国国家自然科学基金;

关键词：

Phosphor; Energy transfer; Thermal stability; w-LEDs; TEMPERATURE-DEPENDENT LUMINESCENCE; PHOTOLUMINESCENCE PROPERTIES; NITRIDE PHOSPHORS; CRYSTAL-STRUCTURE; OXYNITRIDE; EARTH; EU2+; SR;

D O I：

10.1016/j.cplett.2017.10.038

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 series of Ca3Si2O4N2: Ce3+, Tb3+ phosphors were synthesized and their phase composition and luminescence properties were investigated. Results showed that an efficient energy transfer occurred between the Ce3+ and Tb3+ ions. The thermal stability of the Ce3+ emission was dramatically enhanced upon Tb3+ doping. The mechanism was attributed to a shift of the configuration coordinate and an increased energy barrier for thermal quenching, which resulted from the enhanced rigid structure of the host. Finally, a white light emitting diode lamp was fabricated, which exhibited excellent properties. These results indicate that Ca3Si2O4N2: Ce3+, Tb3+ can serve as promising blue-green emitting phosphors for w-LEDs. (C) 2017 Elsevier B.V. All rights reserved.

引用

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页码：31 / 37

页数：7

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