Organic single-crystal transistors: development of solution processes and charge transport mechanisms

Takafumi Uemura; Jun Takeya

doi:10.1117/12.893491

7 September 2011 Organic single-crystal transistors: development of solution processes and charge transport mechanisms

Takafumi Uemura, Jun Takeya

Proceedings Volume 8117, Organic Field-Effect Transistors X; 81170J (2011) https://doi.org/10.1117/12.893491
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Takafumi Uemura and Jun Takeya "Organic single-crystal transistors: development of solution processes and charge transport mechanisms", Proc. SPIE 8117, Organic Field-Effect Transistors X, 81170J (7 September 2011); https://doi.org/10.1117/12.893491

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