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Materials 2010, 3(3), 2027-2036; doi:10.3390/ma3032027

A Mechanism of DC-AC Conversion in the Organic Thyristor

1,* , 2
1 Department of Applied Physics, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan 2 The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa 277-8581, Japan 3 Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
* Author to whom correspondence should be addressed.
Received: 5 February 2010 / Revised: 18 February 2010 / Accepted: 16 March 2010 / Published: 19 March 2010
(This article belongs to the Special Issue Organic Electronic Materials)
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The charge ordered organic salt θ-(BEDT-TTF)2CsZn(SCN)4 exhibits a giant nonlinear conduction at low temperatures. The voltage-current characteristics of this compound are similar to those of a thyristor device, after which we named it the organic thyristor. This material shows current oscillation in the presense of dc voltage, which arises from a mechanism different from conventional oscillating circuits, because the oscillation appears in a sample that does not show negative derivative resistance. We have performed a standard circuit analysis, and show that the voltage-current curve is “blurred” in the high current region, and the oscillation occurs in the blurred region. This type of oscillation has never been reported, and a possible origin for this is suggested.
Keywords: organic conductor; charge order; nonlinear conduction; current oscillation organic conductor; charge order; nonlinear conduction; current oscillation
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Suko, T.; Terasaki, I.; Mori, H.; Mori, T. A Mechanism of DC-AC Conversion in the Organic Thyristor. Materials 2010, 3, 2027-2036.

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