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Kinetics of Electrochromic Effect in Amorphous Tungsten Trioxide Films

Published online by Cambridge University Press:  15 February 2011

I. A. Konovalov ,
V. B. Nechitajlo  and
E. Shushakova
I. A. Konovalov
Affiliation:
Toronto, Canada, c1591@freenet.toronto.on.ca
V. B. Nechitajlo
Affiliation:
Institute of Physics, 46 Pr. Nauki, Kiev, Ukraine.
E. Shushakova
Affiliation:
Toronto, Canada, c1591@freenet.toronto.on.ca
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Abstract

Reversible coloration occurs in tungsten trioxide (WO3) films when double injection of electrons and ions is provided in its volume. Experiments were performed in electrochemical cell with liquid electrolyte, where protons were used for injection in amorphous WO3 films. Kinetics of electrochromic coloration process was studied in spectral range of 300 nm to 1200 nm. Dependence of optical density on injected charge was found to be different in various spectral regions for coloring and bleaching. Infrared vibrational spectra of electro-chemically colored crystalline and amorphous WO3 were obtained. Electronic structure features of amorphous WO3 related to electorchromism are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 453: Symposium R – Solid State Chemistry of Inorganic Materials , 1996 , 665
Copyright
Copyright © Materials Research Society 1997

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References

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