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Optical Property,Wettability and Photo-Induced Conversion of Cu-Doped ZnO Thin Films
Pages: 367-371
Year: Issue:  4
Journal: Chinese Journal of Vacuum Science and Technology

Keyword:  Sol-gelCu-doped ZnO thin filmsSurface topographyAbsorption edgeWettability;
Abstract: The Cu-dopedZnO coatings,Cu0.05Zn0.95Oand Cu0.10Zn0.90O,were synthesized in sol-gel method.The impacts of the synthesis conditions,including the sintering temperature and Cu-content,on the microstructures,phase structures,and propertiesof the coatingswere evaluated.The Cu-dopedZnO coatingswere characterizedwithX-ray diffraction, atomic force microscopy,ultra violet visible(UV-Vis)spectroscopy,and photo luminescence(PL)spectroscopy.The results show thatthe sintering temperature strongly affects propertiesof the Cu-dopedZnO coatings.Forexample,with a fixed Cucontent,as the temperature increased from 500 to 800℃,its XRD peak height of CuO increased,its surfaces roughness changed in a decrease-increase mode,accompaniedwith a red-shiftof itsUV absorption edge and an increasingly stronger emission intensity of violet light.Interesting finding is that UV irradiation for 120 min turned its hydrophobicity into hydrophilicity.
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