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	2011/06
形態種別	学術雑誌
標題	Effect of air exposure on metal/organic interface 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	98(24)
著者・共著者	Xubing Lu,Takeo Minari,Akichika Kumatani,Chuan Liu,Kazuhito Tsukagoshi
概要	We report the effect of air exposure on charge injection process through the metal/organic interface in organic field-effect transistors. Pentacene-based field-effect transistors and metal-insulator-semiconductor capacitors having gold or copper contact were fabricated without exposing to air. An air exposure caused remarkable improvement on the electrical characteristics of the devices, particularly on the contact resistance and frequency response characteristics. Measurements of photoelectron yield spectroscopy revealed that natural oxidation significantly shifted the work function of contact metal and thus charge injection efficiency was improved. This result provides critical insights on control of desirable metal/organic interface in organic electronics devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3599056]
DOI	10.1063/1.3599056
ISSN	0003-6951
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