Electrochromic properties of WO3 thin film onto gold nanoparticles modified indium tin oxide electrodes

• DOI: 10.1016/j.apsusc.2011.01.137
• Publication Date: 2011-02-10T11:27:28Z
• Authors: Jiajia Deng; Ming Gu; Junwei Di
• Keywords: 01 natural sciences; 0104 chemical sciences

Abstract Gold nanoparticles (GNPs) thin films, electrochemically deposited from hydrogen tetrachloroaurate onto transparent indium tin oxide (ITO) thin film coated glass, have different color prepared by variation of the deposition condition. The color of GNP film can vary from pale red to blue due to different particle size and their interaction. The characteristic of GNPs modified ITO electrodes was studied by UV–vis spectroscopy, scanning electron microscope (SEM) images and cyclic voltammetry. WO 3 thin films were fabricated by sol–gel method onto the surface of GNPs modified electrode to form the WO 3 /GNPs composite films. The electrochromic properties of WO 3 /GNPs composite modified ITO electrode were investigated by UV–vis spectroscopy and cyclic voltammetry. It was found that the electrochromic performance of WO 3 /GNPs composite films was improved in comparison with a single component system of WO 3 .