Photochromism of Europium and Gadolinium Co-Doped Barium Haloapatite
Photochromism of Europium and Gadolinium Co-Doped Barium Haloapatite
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DOI：
10.1149/2.001201ssl
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发表时间：
2012
影响因子：
--
通讯作者：
G. Ju;Yihua Hu;Li Chen;Xiaojuan Wang
中科院分区：
文献类型：
--
作者：
G. Ju;Yihua Hu;Li Chen;Xiaojuan Wang
A white-amethyst photochromic material, Ba10(PO4)6ClF: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.
