Synthesis and electrochromic properties of molybdenum oxide films

Chin-Tan Lee,Sheng Han,Yu-Xiang Zhao, Ying-Chun Hung, Tsung-Hsien Hsu, Hsin-Yu Hsieh,Ko-Wei Weng

Surface and Coatings Technology(2019)

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Molybdenum oxide (MoOx) thin films were prepared by pulse DC sputtering using a molybdenum target and their optical and electrochromic properties were investigated. These MoOx thin films were reactively sputter-deposited at various oxygen flow rates. The effects of the oxygen flow rate on the growth and microstructure of the molybdenum oxide films were examined using X-ray diffractometry (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The optical density and modulation of the MoOx films were analyzed using a UV/VIS spectrophotometer (UV–visible). Electrochromic tests were conducted using an electrochemical analyzer. Experimental results reveal that the electrochromic properties depended strongly on the crystalline phase, thickness, chemical composition and microstructure, which were controlled by varying the oxygen flow rate.
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Key words
MoOx thin films,Pulse DC sputtering,Oxygen flow rates,Electrochromic tests
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