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Proceedings Paper

Self-assembled single-crystal organic semiconductors via solution process for high-performance supramolecular transistors
Author(s): Do Hwan Kim; Kilwon Cho
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Paper Abstract

Control over supramolecular organization of electronically active π-conjugated organic molecules provides great opportunities to fine-tune and optimize their electrical properties for applications in organic field-effect transistors and sensors. Here we report high-quality single-crystal organic semiconductors with conjugated organic molecules via facile solution processing. We show a well-faceted, high-quality 1D single-crystal microwire using self-organized poly (3-hexylthiophene), P3HT with unprecedented electrical characteristics such as a low resistance (0.5 MΩ), a channel current as high as 25 μA, and a well-resolved gate modulation via solution growth. Furthermore, we report the fabrication of high-quality 1D triisopropylsilylethynyl pentacene (TIPS_PEN) microribbons via a simple solution process with well-defined facets and remarkable electrical characteristics, such as field-effect mobility as high as 1.4 cm2/V.s. We found that 1D single-crystal microwires and microribbons are formed spontaneously through facile self-assembly of individual conjugated molecules. Our findings indicate that π-conjugated organic single-crystals are capable of very efficient charge transport.

Paper Details

Date Published: 25 August 2006
PDF: 10 pages
Proc. SPIE 6336, Organic Field-Effect Transistors V, 633607 (25 August 2006); doi: 10.1117/12.680521
Show Author Affiliations
Do Hwan Kim, Pohang Univ. of Science and Technology (South Korea)
Kilwon Cho, Pohang Univ. of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 6336:
Organic Field-Effect Transistors V
Zhenan Bao; David J. Gundlach, Editor(s)

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