Photochromism of Europium and Gadolinium Co-Doped Barium Haloapatite

被引：14
|
作者：
Ju, Guifang [1 ]
Hu, Yihua [1 ]
Chen, Li [1 ]
Wang, Xiaojuan [1 ]
机构：
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Guangdong, Peoples R China
来源：
ECS SOLID STATE LETTERS | 2012年 / 1卷 / 01期
基金：
中国国家自然科学基金;
关键词：
INORGANIC-COMPOUNDS; LUMINESCENCE; EU2+; MECHANISM; MEMORIES; SWITCHES; APATITES; GLASSES;
D O I：
10.1149/2.001201ssl
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A white-amethyst photochromic material, Ba-10(PO4)(6)ClF:Eu2+,Gd3+, was synthesized. This material is sensitive to electromagnetic waves from ultraviolet (UV) to X-ray. The material changes its color from white to amethyst under UV or X-ray irradiation. The photo-colored sample can be bleached by green light irradiation or heat-treatment. Another striking feature of these compounds is their resistance to fatigue. A model that involves the ionization of the 5d electron of Eu2+ to conduction band states and subsequent trapping by a positive lattice defect is proposed for the photochromism in this compound. (C) 2012 The Electrochemical Society. All rights reserved.
引用
收藏
页码：R1 / R3
页数：3
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