Optical properties and aging of gasochromic WO3

被引：34
|
作者：
Ghosh, R. [1 ]
Baker, M. B. [1 ]
Lopez, R. [1 ]
机构：
[1] Univ N Carolina, Chapel Hill, NC 27599 USA
来源：
THIN SOLID FILMS | 2010年 / 518卷 / 08期
关键词：
Pulsed laser deposition; Gasochromic property; Tungsten oxide; Polydimethylsiloxane layer; THIN-FILMS; TUNGSTEN-OXIDE; COLORATION; MECHANISM; MODEL;
D O I：
10.1016/j.tsf.2009.08.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The limits Of WO3 as an optical gas sensor were derived by establishing the change in optical constants induced by 2% H-2 in At. Using Langmuir's adsorption equation, it was found that at low H-2 concentrations a high sensitivity is predicted, but the coloration could saturate at 57.9% of the material's maximum ion adsorption. The air poisoning problem observed in these devices was shown to be remedied by coating with a permeable polydimethylsiloxane layer, thus eliminating common atmospheric gases as the possible poisoning agents. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2247 / 2249
页数：3
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