We studied electrochromic cells incorporating evaporated WO3, MoO3 and mixe
d WO3-MoO3 thin films as electrochromic layers. Li+ doped V2O5 films served
as an ion storage layer. The devices exhibit good optical properties with
very low luminous transmittance values in the colored state, which make the
m suitable for large-area window applications. Addition of V2O5 films as an
ion storage layer was found to improve the cell coloration performance up
to 74%. (C) 1999 Elsevier Science S.A. All rights reserved.