Organic single crystal transistor characteristics of single-crystal phase pentacene grown by ionic liquid-assisted vacuum deposition

被引:48
作者
Takeyama, Yoko [1 ]
Ono, Shimpei [2 ]
Matsumoto, Yuji [1 ]
机构
[1] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] Cent Res Inst Elect Power Ind, Komae, Tokyo 2018511, Japan
关键词
FIELD-EFFECT TRANSISTORS; THIN-FILM TRANSISTORS; LARGE-AREA ELECTRONICS; CHARGE-TRANSPORT; MOBILITY; INTERFACE; INSULATOR; RUBRENE;
D O I
10.1063/1.4747148
中图分类号
O59 [应用物理学];
学科分类号
摘要
Organic transistor characteristics of single-crystal phase pentacene were investigated. Ionic liquids (ILs) were used as not only a gate dielectric material in the transistors but also a crystallization solvent in vacuum deposition of pentacene. The crystal sizes reached 200 mu m and their surface exhibits a molecularly step-and-terrace structure. There was no sign of IL molecules inside the crystal, and the impurity level of 6,13-pentacenequinone was also reduced. The average value of the field-effect mobility was not so inferior to those for the conventional pentacene single crystals, and the highest value exceeded 5 cm(2)/Vs, with the on/off current ratio of 10(4). (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747148]
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页数:4
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