Please use this identifier to cite or link to this item:
|Title:||Sol-gel deposition of EC-WO3 films using a precursor with enhanced stability|
Agnihotry, S A
|Abstract:||Deposition of WO3 films using precursors based on non-alkoxide materials follow two different routes. One of them involves preparation of polytungstic acid 'sol' by ion-exchange route. Although the reaction here is carried out at room temperature, the sol thus obtained is unstable and transforms into a gel within a short time. The other route follows preparation of peroxotungstic acid (PTA) starting with tungsten metal and reacting it with excess hydrogen peroxide under controlled conditions of temperature, resulting in a precursor with enhanced stability. PTA was characterized by DSC, XRD, FTIR and UV-visible spectrophotometry. Films deposited by spin coating technique when tested for electrochromism were found suitable for such applications.|
|ISSN:||0975-1041 (Online); 0019-5596 (Print)|
|Appears in Collections:||IJPAP Vol.37(04) [April 1999]|
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.