Effects of oxygen addition to the electrochromic properties of WO3-z thin films sputtered on flexible PET/ITO substrates
作者： Yung-Sen Lin , Yue-Liang Chiang , Jhen-Yi Lai
DOI: 10.1016/J.SSI.2008.10.009
关键词: Indium tin oxide 、 Electrochromism 、 Polyethylene terephthalate 、 Working electrode 、 Materials science 、 Cyclic voltammetry 、 Propylene carbonate 、 Sputtering 、 Inorganic chemistry 、 Thin film
摘要: Abstract An investigation was conducted on electrochromic properties of WO3 − z (tungsten oxide) thin films sputtered 60 Ω/□ flexible PET (polyethylene terephthalate)/ITO (indium tin substrates at various oxygen flow rates. A metallic W target, by radio frequency (r.f.) power with argon gases and reacted room temperature (23 °C), proven to provide extraordinary properties. Cyclic voltammetry measurement demonstrated that only low driving voltages from − 1 V 1 V were needed Li+ ion insertion extraction a working electrode. The PET/ITO/WO3 − z film mounted the electrode dipped in 0.1 M LiClO4–PC (propylene carbonate) electrolyte. investigated cyclic potentiostatic switching ultraviolet (UV)–visible spectroscopy. rate 0.71 sccm O/W-ratio 2.916, an deficiency z 0.084 coefficient x 0.150 can offer excellent light modulation up 73.1% transmittance variation, optical density change 0.89 color efficiency 62.4 cm2/C wavelength 650 nm 14 s extraction.
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