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Proceedings Paper

Crystalline structures in organic semiconductors for high-performance OTFT applications
Author(s): Hoichang Yang; Tae Joo Shin; Mang-Mang Ling; Chang Y. Ryu; Zhenan Bao
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Paper Abstract

We have investigated crystalline structures in organic semiconducting thin films with regioregular poly(3-alkyl thiophene)s, pentacene, and oligofluorene-thiophene derivatives, using grazing-incidence X-ray diffraction and atomic force microscopy. We found that crystalline morphologies and molecular orientation in these thin films strongly affect electric characteristics of these film-based organic thin-thin transistors (OTFTs). Specifically, in solution- and vacuumdeposited films, preferentially perpendicular orientation of π-conjugated crystalline planes with respect to dielectric substrates require results in high-performance charge mobility in the OTFT devices.

Paper Details

Date Published: 25 August 2006
PDF: 15 pages
Proc. SPIE 6336, Organic Field-Effect Transistors V, 63360B (25 August 2006);
Show Author Affiliations
Hoichang Yang, Rensselaer Polytechnic Institute (United States)
Tae Joo Shin, Pohang Accelerator Lab. (South Korea)
Mang-Mang Ling, Stanford Univ. (United States)
Chang Y. Ryu, Rensselaer Polytechnic Institute (United States)
Zhenan Bao, Stanford Univ. (United States)

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

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