Recent Progress on Flexible Organic Transistors

Professor Kazuhiro Kudo

Chiba University, JAPAN

地点: 物理楼中楼212室

时间：2014年10月23日 下午15:00-17:00

Organic field-effect-transistors (OFETs) are promising in the future development of active devices for flexible, low-cost and large-area photoelectric devices．However, conventional FETs using organic materials have low-speed, low-power, and relatively high operational voltage. We have proposed several new type OFETs such as vertical type transistors called as static induction transistors (SIT), step-edge vertical channel (SVC) transistors, and phase transition transistors using charge-transfer complex. In particular, the vertical FETs show high-speed and high-power operations and their excellent characteristics mainly arise from the vertical structure with a very short length between the source, drain, and gate electrodes. Phase transition transistors and nano-wire transistors using charge-transfer complex were also fabricated. In addition, these OFETs are able to fabricate on flexible substrates and are expected for portable device applications.

In this presentation, I describe the advantages of new type organic transistors and their basic characteristics.

From 1982 to 1987, he was with Matsushita Electric Industrial Co. Ltd. He was with the Department of Electrical Engineering, Chiba University from 1987 as an Associate Professor. Since 1998, he has been a Professor with the Graduate School of Engineering, Chiba University. ?From 1998 to 1999, he joined as a visiting Professor of Physics Department, University of London.

K. Kudo, M. Yamashina and T. Moriizumi: Field Effect Measurement of Organic Dye Films, Jpn.J.Appl.Phys., 23,130(1984) *First report of OFET.

K. Kudo, D. X. Wang, M. Iizuka, S. Kuniyoshi and K. Tanaka: Schottky Gate Static Induction Transistor Using Copper Phthalocyanine Films, Thin Solid Films, 331, 51(1998) *First paper of Vertical OFET.

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