Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

被引：17
|
作者：
Li, Jie [1 ,2 ]
Wang, Li [1 ]
Zhou, Hefeng [1 ]
Liu, Xuguang [1 ,3 ]
Xu, Bingshe [1 ,4 ]
机构：
[1] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Peoples R China
[2] N Univ China, Coll Mat Sci & Engn, Taiyuan 030051, Peoples R China
[3] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Peoples R China
[4] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 506卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Electronic structures; Photoluminescence; Sr2CeO4; phosphor; Energy transfer; LIQUID-MEMBRANE SYSTEM; BLUE PHOSPHOR; THIN-FILMS; OPTICAL-PROPERTIES; EU3+; PARTICLES;
D O I：
10.1016/j.jallcom.2010.07.126
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：
Sr2CeO4, pure and doped with Eu3+ ions of different concentrations, were synthesized by polyacrylamide gel method. First principles were applied to calculate the electronic structures and band gap of Sr2CeO4. The results show that a broad emission band originating from Sr2CeO4 host and Eu3+ emission lines in blue, green, and red regions coexist. The increase in Eu3+ concentration results in the luminescence intensity redistribution between the sr(2)CeO(4) host and the doping ion. The energy transfer model clarifies the possible mechanisms of energy transfer from Sr2CeO4 host to Eu3+ in Sr2CeO4:Eu3+ phosphor. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：950 / 955
页数：6
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