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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/102114

    Title: 利用鍺和二氧化錫奈米異質介面形成的多功能檢測器 : 多頻光譜與氣體偵測器
    Other Titles: Multi-capability detection by using GeSnO2 nano-heterojunction : broadband light and gas detection
    Authors: 許景涵;Hsu, Ching-Han
    Contributors: 淡江大學物理學系碩士班
    葉炳宏;Yeh, Ping-Hung
    Keywords: ;二氧化錫;奈米線;奈米元件;奈米異質接觸;多頻光譜感測器;氣體感測器;Germanium;Tin Dioxide;nanowire;Nano device;Nano-heterojunction;Broadband light sensor;gas sensor
    Date: 2014
    Issue Date: 2015-05-04 09:47:46 (UTC+8)
    Abstract:   近年來,在一維奈米尺度電子元件上有許多研究團隊利用歐姆接觸與蕭特基接觸方式,提升了元件的輸出能力與靈敏度及反應效率,但如何增加單一材料奈米元件的感測多樣性,是奈米元件發展的關鍵。
      Recently, there are several articles discussed how using ohmic and schottky contact mechanism to form sensors and how to increase the sensitivity and efficiency. Most of them are focus on the single material detection; but there are few articles used one material to functionalize the other material for intensifying the detection ability. In this study, we used two different materials (Germanium and Tin dioxide nanowire) to fabricate Ge/SnO2 nano-heterojunction device (GSNHD) for light and gas detection. For light detection, the broadband light can be detected due to the heterojunction interface. That is because the band continue formed by the heterojunction formation. So the GSNHD can detect different wavelengths light by operating the device tuning voltage. In gas sensing, due to the device scale-down, the Joule heating effect can be enlarged to enhance the oxygen and carbon monoxide adsorption and desorption capability. Worth to mention, the sensing ability of GSNHD is different for different gas environments by tuning voltage. From above experiment, GSNHD shows high sensitivity for environment changing. The ability of broadband light and gas detection can be improved because the band engineering of GSNHD by tuning voltage. In this research work, the multi-capability ability can be proved by using GSNHD.
    Appears in Collections:[物理學系暨研究所] 學位論文

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