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Browsing by Author "Liang, Yun-Chia"

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    Gas sensing mechanism in pentacene-based OTFTs
    (2007)
    Zan, Hsiao-Wen
    ;
    Liang, Yun-Chia
    ;
    Tsai, Wuu-Wei
    ;
    Yang, Yuh-Shyong
    ;
    光電工程學系
    The ammonia gas sensing behaviors of pentacene-based organic thin-film transistors were characterized by analyzing parameters such as the threshold voltage, the field-effect mobility and the subthreshold swing. It was firstly found that the bias-induced carriers strongly enhanced the gas sensing. Bias-stress model successfully explained the experimental results. The ammonia-induced threshold voltage shift was probable due to the generation of nitrogen- or hydrogen-related defect states in the pentacene film.