Solid state electrochemical devices (ECDs) for smart windows, large area di
splays and automobile rearview mirrors are of considerable technological an
d commercial interest. In this paper, we studied the electrochromic propert
ies of amorphous and polycrystalline CVD carbonyl tungsten oxide films and
the possibility for sol-gel thin TiO2 film to play the role of passive elec
trode in an electrochromic window with solid polymer electrolyte. (C) 1999
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