文化大學機構典藏 CCUR:Item 987654321/24059
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    题名: Enhanced optoelectronic performance from the Ti-doped ZnO nanowires
    作者: Chang, LW (Chang, Li-Wei)
    Sung, YC (Sung, Yung-Chiao)
    Yeh, JW (Yeh, Jien-Wei)
    Shih, HC (Shih, Han C.)
    贡献者: Dept Chem & Mat Engn
    关键词: THERMAL EVAPORATION METHOD
    FIELD-EFFECT TRANSISTOR
    OXIDE THIN-FILMS
    NANOBRIDGE DEVICES
    ELECTRICAL-PROPERTIES
    TRANSPORT-PROPERTIES
    DEPOSITION
    ARRAYS
    CONDUCTIVITY
    FABRICATION
    日期: 2011-04
    上传时间: 2013-01-24 13:18:47 (UTC+8)
    摘要: Ti-doped ZnO nanowires (NWs) were fabricated by thermal evaporation and metal vapor vacuum arc (MEVVA) ion implantation process. The effect of Ti doping on the structure, morphology, and electrical/optical properties of the as-grown NWs was investigated. The fraction of Ti doping was estimated to be 1 at. % to 2 at. % based on energy-dispersive x-ray spectroscopy (EDS). The x-ray diffraction analyses indicated that Ti-doped ZnO NWs are similar to ZnO NWs in crystal structure, which has been taken to indicate that no titanium oxide phase was produced. Cathodoluminescence (CL) spectra taken from the Ti-doped ZnO NWs at room temperature showed two distinct emission peaks, at 374 nm and at 752 nm. Electrical measurements showed that the resistivity of a single ZnO NW decreased from 1.22 x 10(-1) Omega cm to 3.5 x 10(-2) Omega cm with Ti doping. The semiconducting parameters of bent Ti-doped NWs squeezed between two approaching contacts inside the pole piece of the microscope were determined on the basis of experimentally recorded I-V curves. The approach suggests that one-dimensional nanostructures are suitable for application as optoelectronic devices. (C) 2011 American Institute of Physics.
    關聯: JOURNAL OF APPLIED PHYSICS 卷: 109 期: 7 文獻號碼: 074318
    显示于类别:[化學工程與材料工程學系暨碩士班] 期刊論文

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