Applied Surface Science, Vol.254, No.23, 7676-7678, 2008
The coloration of tungsten-oxide film by oxygen deficiency and its mechanism
The transmissivity and the optical absorption of a WO3 film with oxygen deficiencies introduced were characterized and compared with those of an electrochromically colored WO3 upon injecting a proton (H+). The WO3 film with oxygen deficiencies introduced was clearly colored blue. It was shown that the wavelength regions of optical absorption of both films almost overlapped each other. (C) 2008 Elsevier B.V. All rights reserved.