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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/101065


    Title: A nanopoint Schottky-gate array device: surface defect application and molecular detection
    Authors: Chun-Han Sung;Tzu-Chiao Chien;Chih-Ming Chang;Chien-Min Chang;Ping-Hung Yeh
    Contributors: 淡江大學物理學系
    Date: 2015
    Issue Date: 2015-03-26 14:53:01 (UTC+8)
    Publisher: Cambridge: R S C Publications
    Abstract: We have demonstrated a nanopoint Schottky-gate array device (NPSGAD) which can enhance the sensitivity, the signal current output level and the distinguishability by placing numerous ZnO point Schottky-gates in parallel gigantically. By using NPSGADs, we can improve the current output to the order of mA and enhance the CO sensor detection ability to room temperature detection. NPSGADs can achieve the above-mentioned properties based on several designs, e.g. point Schottky-gate can enhance detection response, parallel Schottky-gate can enhance the gas monitor levels and Schottky-gate array can reduce the total resistance for high signal current output. For UV light detection, NPSGADs can achieve a signal current of 8 mA. For room temperature detection of CO, the signal current can be enhanced above 0.25 mA. Note that these signal levels can already be used for commercial application. The gas detection signal also can be improved by increasing the operating temperature; moreover, the current variation averages of CO detection of the NPSGAD are 1.7 mA, 10.1 mA and 14.9 mA at operating temperatures of 150 °C, 350 °C and 400 °C, respectively.
    Relation: RSC Advances 5, pp.16769-16773
    DOI: 10.1039/C4RA15763J
    Appears in Collections:[Graduate Institute & Department of Physics] Journal Article

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