Journal article

The anodized crystalline WO3 nanoporous network with enhanced electrochromic properties

Jian Zhen Ou, Sivacarendran Balendhran, Matthew R Field, Dougal G McCulloch, Ahmad Sabirin Zoolfakar, Rozina A Rani, Serge Zhuiykov, Anthony P O'Mullane, Kourosh Kalantar-zadeh

Nanoscale | ROYAL SOC CHEMISTRY | Published : 2012

Abstract

We demonstrate that a three dimensional (3D) crystalline tungsten trioxide (WO(3)) nanoporous network, directly grown on a transparent conductive oxide (TCO) substrate, is a suitable working electrode material for high performance electrochromic devices. This nanostructure, with achievable thicknesses of up to 2 μm, is prepared at room temperature by the electrochemical anodization of a RF-sputtered tungsten film deposited on a fluoride doped tin oxide (FTO) conductive glass, under low applied anodic voltages and mild chemical dissolution conditions. For the crystalline nanoporous network with thicknesses ranging from 0.6 to 1 μm, impressive coloration efficiencies of up to 141.5 cm(2) C(-1)..

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University of Melbourne Researchers