Electrolyte thickness dependence of the electrochromic behavior of ‘‘<i>a</i>-WO3’’ films

Abstract

The electrochromic behavior of all-solid-state device, Au/a-WO3/LiF/Au has been studied as a function of the thickness of LiF as electrolyte. Thickness-dependent coloration and response time have been observed. The electrochromic coloration takes place at different stages, and a significant change in the transmittance of the tandem over a wide wavelength range (500–1000 nm) occurs. Hence, the performance of this configuration suggests the possible application of the tandem in all-solid-state ‘‘switchable windows’’.