Pyrolytically spray-deposited tungsten trioxide films: dependence of electrochromic transmittance on crystallinity
- 14 December 1988
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 21 (12), 1802-1806
- https://doi.org/10.1088/0022-3727/21/12/023
Abstract
Tungsten trioxide (WO3) films prepared by spray pyrolysis at various temperatures and on various SnO2:F substrates were investigated by means of X-ray diffraction and the results correlated to the electrochromic behaviour of the films. Films deposited onto polycrystalline SnO2:F films at a substrate temperature of 420 degrees C showed an electrochromic transmittance change of 90% in the near infrared. This strong colouration was associated with a randomly oriented film structure and a large crystallite size of the WO3 films.Keywords
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