Studies of tungsten oxide electrochromic thin films and polycrystals by the EXAFS method

Abstract

The structure of thermally evaporated tungsten trioxide (a-WO 3) amorphous thin films and a number of tungsten oxide polycrystals (c-WO 3, c-WO 2.96, c-WO 2.72, c-WO 2) have been studied by EXAFS method along the L III-edge of tungsten and by electron diffraction. The distances of W-O and W-W in the first and second tungsten coordinate spheres have been determinated.