The Electrochromic Properties of Nanostructured Bi-Layer WO3 Thin Films Prepared by DC Sputter and Electrochemical Method

Bi-layer WO3 thin films were prepared onto ITO/glass substrates, where the lower layer was deposited using DC sputtering and upper nanotube layer was grown using anodization method. The influences of anode voltage on the growth of nanotube WO3 thin films