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Proceedings Paper

Optical and electrochromic properties of sol-gel-deposited tungsten oxide films
Author(s): Esra Ozkan; Se-Hee Lee; Ping Liu; C. Ed Tracy; Fatma Z. Tepehan; J. Roland Pitts; Satyen K. Deb
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Paper Abstract

The electrochromic properties of sol-gel and mesoporous tungsten oxide thin films were investigated. Tungsten oxide films were prepared by a spin coating technique from an ethanolic solution of tungsten hexachloride. A block copolymer (BASF Pluronic p123, (p1) was employed as a template to generate the mesoporous structure. The electrochromic and optical properties of such films are described and compared to standard sol-gel tungsten oxide films. A novel ultraviolet (UV) illumination method was developed to remove the polymer templates and was found to improve the coloration efficiency of tungsten oxide in general. All types of films were analyzed by transmission electron microscopy (TEM), atomic force microscopy (AFM), x- ray diffractometry and cyclic voltammetry.

Paper Details

Date Published: 13 November 2001
PDF: 11 pages
Proc. SPIE 4458, Solar and Switching Materials, (13 November 2001); doi: 10.1117/12.448247
Show Author Affiliations
Esra Ozkan, National Renewable Energy Lab. and Istanbul Technical Univ. (Turkey)
Se-Hee Lee, National Renewable Energy Lab. (United States)
Ping Liu, National Renewable Energy Lab. (United States)
C. Ed Tracy, National Renewable Energy Lab. (United States)
Fatma Z. Tepehan, Istanbul Technical Univ. (Turkey)
J. Roland Pitts, National Renewable Energy Lab. (United States)
Satyen K. Deb, National Renewable Energy Lab. (United States)


Published in SPIE Proceedings Vol. 4458:
Solar and Switching Materials
Carl M. Lampert; Claes-Goran Granqvist; Keith L. Lewis; Carl M. Lampert; Claes-Goeran Granqvist; Keith L. Lewis, Editor(s)

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