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Jpn. J. Appl. Phys. 49 (2010) 071605 (5 pages)  |Previous Article| |Next Article|  |Table of Contents|
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Self Contact Organic Transistors

Jun-ichi Inoue, Hiroshi Wada, and Takehiko Mori

Department of Chemistry and Materials Science, Tokyo Institute of Technology, O-okayama, Meguro, Tokyo 152-8552, Japan

(Received March 15, 2010; accepted April 25, 2010; published online July 20, 2010)

Thin films of various organic semiconductors, such as pentacene, sexithiophene, copper phthalocyanine, and C60, as well as an organic charge-transfer salt (TTF)(TCNQ) [TTF: tetrathiafulvalene; TCNQ: tetracyanoquinodimethane] are laser-irradiated to form conductive films, which are identified by Raman spectroscopy and atomic force microscopy to be carbon. The resulting practically transparent films are as conductive as laser-sintered carbon films and show temperature-independent conductivity. Source and drain electrodes of organic field-effect transistors are patterned by this method; in these “self-contact” transistors, both the active layers and the electrodes are derived from the same organic film. The laser-sintered carbon films are also utilized for organic single-crystal transistors based on rubrene and TCNQ.

URL: http://jjap.jsap.jp/link?JJAP/49/071605/
DOI: 10.1143/JJAP.49.071605


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