The Beer-Lambert law for electrochromic tungsten oxide thin films

被引：29

作者：

Scarminio, J

Urbano, A

Gardes, B ^{[1
]}

机构：

[1] Univ Estadual Londrina, Dept Fis, Lab FILMAT, BR-86051970 Londrina, Para, Brazil

[2] Univ Estadual Londrina, Dept Quim, Lab FILMAT, BR-86051970 Londrina, Para, Brazil

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1999年 / 61卷 / 02期

关键词：

optical absorption; electrochromism; tungsten oxide film;

D O I：

10.1016/S0254-0584(99)00132-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrochemical intercalation of Li+ ions into amorphous and polycrystalline tungsten oxide films were performed by cyclic voltammetry and chronopotentiometry techniques. From transmittance measurements at 632 nm, it was observed that the optical absorption intensities were proportional to the intercalated charge. The Beer-Lambert law is suggested to explain these results for which the intercalated electrons answer as absorptive species. The highest optical absorption coefficients or electrochromic efficiencies were obtained for the amorphous films. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：143 / 146

页数：4

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