Title of article
Preparation and Characterization of WO3 Electrochromic Films Obtained by the Sol-Gel Process
Author/Authors
-، - نويسنده Material and Ion Beam Application Division, Nuclear Research Center, P. O. Box 31485-498, Karaj, I.R. IRAN Sharbatdaran, Masoomeh , -، - نويسنده Material and Ion Beam Application Division, Nuclear Research Center, P. O. Box 31485-498, Karaj, I.R. IRAN Novinrooz, Abdoljavad , -، - نويسنده Material and Ion Beam Application Division, Nuclear Research Center, P. O. Box 31485-498, Karaj, I.R. IRAN Noorkojouri, Hassan
Issue Information
فصلنامه با شماره پیاپی 38 سال 2006
Pages
5
From page
25
To page
29
Abstract
-
Abstract
Tungsten trioxide (WO3) films have been coated on indium thin oxide (ITO) conductive glass substrate, using aqueous solution of peroxotungstic acid (PTA) by the sol-gel dip coating method. X-ray diffractometery (XRD) analysis confirmed monoclinic and triclinic structure for the film and powdered WO3 respectively. Fourier transforms infrared spectroscopy (FT-IR) exhibited the structure of peroxotungstic acid. The SEM micrograph of annealed species revealed micro cracks due to decrease of density and contraction of layers. Energy- dispersive X-ray (EDX) study determined 1:3 ratios of oxygen and tungsten atoms in the prepared films at heat treatment temperature higher than 200ºC. The electrochromical behavior was investigated in 1M HCL solution employing cyclic voltammetry. It was found that WO3 films demonstrated good reversibility at 200 ºC.
Journal title
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
Serial Year
2006
Journal title
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
Record number
2149520
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