Electrochromic properties of organic-inorganic composite materials

A new type of electroactive composite material based on tungsten trioxide (WO3) and poly (tri(4-(2′-thienyl)) phenylamine) (P3TPA) was prepared. Using the WO3/P3TPA as electroactive material, the electrochromic device was fabricated, and the electrochromic properties of WO3/P3TPA were investigated. Compared with WO3, the coloring switching time and the bleaching switching time of WO3/P3TPA was decreased. The response speed became faster. The open-circuit memory of WO3/P3TPA became better. The coloration efficiency of WO3/P3TPA increased.