Low temperature photochromism in quasi-amorphous MoO3 films

被引：31
|
作者：
Tritthart, U [1 ]
Gavrilyuk, A [1 ]
Gey, W [1 ]
机构：
[1] Tech Univ Braunschweig, Phys Tech Inst, D-38106 Braunschweig, Germany
来源：
SOLID STATE COMMUNICATIONS | 1998年 / 105卷 / 10期
关键词：
insulators; surfaces and interfaces; tunnelling; light absorption and reflection;
D O I：
10.1016/S0038-1098(97)10150-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report on the possibility of low temperature photochromism in quasiamorphous MoO3 films. In order to achieve this down to a temperature of 35K specific organic molecules were adsorbed on the surface of the MoO3 films. Absorption spectroscopy analysis permits distinction between surface and bulk color centers which arise due to different positions of hydrogen detached from the organic molecules by UV-illumination. The mechanism of the formation of color centers at low temperatures is discussed. Evidence was found of a tunneling reaction for temperatures below T=200K. (C) 1998 Elsevier Science Ltd.
引用
收藏
页码：653 / 657
页数：5
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