Structure, electrochromic and optical properties of WO3 film prepared by dip coating-pyrolysis |
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| Authors: | Haitao Yang Ling Gao |
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| Institution: | a Shenzhen Key Lab of Special Functional Materials, Department of Materials, School of Science, Shenzhen University, Shenzhen 518060, China
b State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | The tungsten oxide (WO3) film was grown by dip coating-pyrolysis method with the PEG-400 as the structure-directing agent. Microstructure of the WO3 film was characterized by TG-DSC, XRD and SEM techniques. It was found that the film annealed at 350 °C for 2 h comprised cubic WO3 and orthorhombic WO3. The measurements of the cyclic voltammetry (CV) and UV-vis spectrum suggested that the WO3 film had a good electrochromic reversibility performance. The film possessed excellent modulation to the visible light and the maximal average transmittance modulation reached 70.06%. |
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| Keywords: | WO3 Film Structure Electrochromism Transmittance |
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