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Proceedings Paper

Organic single-crystal transistors: development of solution processes and charge transport mechanisms
Author(s): Takafumi Uemura; Jun Takeya
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Paper Abstract

Patternable solution-crystallized organic transistors are developed with high carrier mobility that exceeds 10 cm2/Vs. We have investigated techniques of crystallization during the fabrication of the organic semiconductor thin films from solution. Regulating direction of the crystal growth in the above process, we successfully formed crystalline films with the mobility as high as 10-12 cm2/Vs from newly developed air-stable organic semiconductor compounds of 2,7-dialkyl[1]benzothieno[3,2-b]benzothiophene (Cn-BTBT) and 2,9-dialkyl-dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (Cn-DNTT). Furthermore, comprehensive measurements of Hall-effect and temperature dependent mobility in the solution-crystallized single-crystal transistors tell us that their fundamental charge transport mechanism is band transport.

Paper Details

Date Published: 8 September 2011
PDF: 7 pages
Proc. SPIE 8117, Organic Field-Effect Transistors X, 81170J (8 September 2011); doi: 10.1117/12.893491
Show Author Affiliations
Takafumi Uemura, Osaka Univ. (Japan)
Jun Takeya, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 8117:
Organic Field-Effect Transistors X
Zhenan Bao; Iain McCulloch, Editor(s)

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