クマタニ　アキチカ   Akichika Kumatani   熊谷　明哉    所属   千葉工業大学  工学部 電気電子工学科    千葉工業大学  工学研究科 工学専攻    職種   教授
言語種別	英語
発行・発表の年月	2012/04
形態種別	学術雑誌
標題	Temperature dependence of frequency response characteristics in organic field-effect transistors
執筆形態	共著
掲載誌名	Applied Physics Letters
掲載区分	国外
出版社・発行元	American Institute of Physics
巻・号・頁	100(18)
著者・共著者	Xubing Lu,Takeo Minari,Chuan Liu,Akichika Kumatani,J. -M. Liu,Kazuhito Tsukagoshi
概要	The frequency response characteristics of semiconductor devices play an essential role in the high-speed operation of electronic devices. We investigated the temperature dependence of dynamic characteristics in pentacene-based organic field-effect transistors and metal-insulator-semiconductor capacitors. As the temperature decreased, the capacitance-voltage characteristics showed large frequency dispersion and a negative shift in the flat-band voltage at high frequencies. The cutoff frequency shows Arrhenius-type temperature dependence with different activation energy values for various gate voltages. These phenomena demonstrate the effects of charge trapping on the frequency response characteristics, since decreased mobility prevents a fast charge response for alternating current signals at low temperatures. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4711211]
DOI	10.1063/1.4711211
ISSN	0003-6951
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