Electrochromic MoO3 thin films were prepared by a sol-gel spin-coating technique. The spin-coated films were initially amorphous; they were calcined, producing nanocrystalline MoO3 thin films. The effects of annealing temperatures ranging from 100 degrees C to 500 degrees C were investigated. The electrochemical and electrochromic properties of the films were measured by cyclic voltammetry and by in-situ optical transmittance techniques in 1 M LiClO4/propylene carbonate electrolyte. Experimental results showed that the transmittance of MoO3 thin films heat-treated at 350 degrees C varied from 80% to 35% at lambda = 550 nm (Delta T = similar to 45%) and from 86% to 21% at lambda >= 700 nm (Delta T = similar to 65%) after coloration. Films heat-treated at 350 degrees C exhibited the best electrochromic properties in the present study. (C) 2007 Elsevier B.V. All rights reserved.
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Shivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
Kharade, Rohini R.
Mali, S. S.
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Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
Mali, S. S.
Mohite, S. S.
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Shivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
Mohite, S. S.
Kondalkar, V. V.
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Shivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
Kondalkar, V. V.
Patil, P. S.
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Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
Patil, P. S.
Bhosale, P. N.
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Shivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, IndiaShivaji Univ, Dept Chem, Mat Res Lab, Kolhapur 416004, Maharashtra, India
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Kongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, IndiaKongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, India
Sreelakshmi, V. R.
Kaliani, A. Anu
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Kongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, IndiaKongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, India
Kaliani, A. Anu
Jithin, M.
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KRS Sree Narayana Coll, Dept Phys, Valanchery 676552, Kerala, IndiaKongunadu Arts & Sci Coll, Dept Phys, Coimbatore 641029, Tamil Nadu, India