Fabrication and Device Simulation of Single Nano-Scale Organic Static Induction Transistors(Organic Molecular Devices,<Special Section>Towards the Realization of Organic Molecular Electronics)

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概要

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• A well-defined test structure of organic static-induction transistor (SIT) having regularly sized nano-apertures in the gate electrode has been fabricated by colloidal lithography using 130-nm-diameter polystyrene spheres as shadow masks during vacuum deposition. Transistor characteristics of individual nano-apertures, namely 'nano-SIT,' have been measured using a conductive atomic-force-microscope (AFM) probe as a movable source electrode. Position of the source electrode is found to be more important to increase current on/off ratio than the distance between source and gate electrodes. Experimentally obtained maximum on/off ratio was 710 (at V_<DS>=-4V, V_<GS>=0 and 2V) when a source electrode was fixed at the edge of gate aperture. The characteristics have been then analyzed using semiconductor device simulation by employing a strongly non-linear carrier mobility model in the CuPc layer. From device simulation, source current is found to be modulated not only by a saddle point potential in the gate aperture area but also by a pinch-off effect near the source electrode. According to the obtained results, a modified structure of organic SIT and an adequate acceptor concentration is proposed. On/off ratio of the modified organic SIT is expected to be 〜100 times larger than that of a conventional one.

• 社団法人電子情報通信学会の論文
• 2006-12-01

著者

• NAKAMURA Masakazu

  Chiba University

• KUDO Kazuhiro

  Chiba University

• Kudo K

  Chiba Univ. Chiba Jpn

• Kudo Kazuhiro

  Department Of Electronic And Mechanical Engineering Faculty Chiba University

• Nakamura Masakazu

  Chiba Univ. Chiba Jpn

• Kudo Kazuhiro

  Chiba Univ. Chiba Jpn

• Kudo Kazuhiro

  Oitda Advanced Organic Device Project Chiba Laboratory

• Kudo Kazuhiro

  Department Of Electronics And Mechanical Engineering Faculty Of Engineering Chiba University

• Nakamura Minoru

  Ntt Access Network Service Systems Laboratories Ntt Corporation

• Ohashi Noboru

  Department Of Electrical And Electronic Engineering Graduate School Of Engineering Chiba University

• Nakamura Masakazu

  Department Of Electronics And Mechanical Engineering Faculty Of Engineering Chiba University

• OHASHI Noboru

  Chiba University

• MURAISHI Norio

  Chiba University

• SAKAI Masatoshi

  Chiba University

• Sakai Masatoshi

  Department Of Electrical And Electronic Engineering Chiba University

• Kudo Kazuhiro

  Chiba University Faculty Of Engineering

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