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Proceedings Paper

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

A detailed systematic study of the tungsten oxide thin films has been carried out using colored WO3 films after they were annealed at progressively increasing temperatures ranging from 350 to 450 degree(s)C in oxygen environments. The structural properties of the films were characterized using x-ray diffraction (XRD) and Raman spectroscopy. The amorphous WO3 films remain as an amorphous phase up to 385 degree(s)C and begin to crystallize at 390 degree(s)C and then are completely crystallized at 450 degree(s)C. Absorption peaks of the films are found to shift to a higher energy side with increasing annealing temperature up to 385 degree(s)C and then shift abruptly to a lower energy as the films begin to crystallize at 390 degree(s)C.

Paper Details

Date Published: 13 November 2001
PDF: 8 pages
Proc. SPIE 4458, Solar and Switching Materials, (13 November 2001); doi: 10.1117/12.448250
Show Author Affiliations
Esra Ozkan, National Renewable Energy Lab. and Istanbul Technical Univ. (Turkey)
Se-Hee Lee, National Renewable Energy Lab. (United States)
C. Ed Tracy, National Renewable Energy Lab. (United States)
Fatma 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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