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Proceedings Paper

Optical anisotropy of pentacene molecules on a photoaligning gate insulator layer for organic thin-film transistors
Author(s): Sung-Jin Kim; Chang-Jae Yu; Chi-Hwan Kim; Sin-Doo Lee
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Paper Abstract

We report on the surface-induced molecular order and the optical anisotropy of the pentacene thin film on a photoaligning buffer layers. The photopolymer, showing an anchoring transition from the vertical alignment to the planar alignment by the exposure of a linearly polarized ultraviolet light, was used as a buffer layer to control the structural order of the pentacene molecules. The atomic force microscopic images revealed the recovery of void sites and the enlargement of the grain size in the pentacene film grown on the photoaligning buffer layer. It was found that the grain size and the optical anisotropy of the pentacene film were strongly correlated with each other.

Paper Details

Date Published: 30 August 2005
PDF: 8 pages
Proc. SPIE 5940, Organic Field-Effect Transistors IV, 594018 (30 August 2005); doi: 10.1117/12.616176
Show Author Affiliations
Sung-Jin Kim, Seoul National Univ. (South Korea)
Chang-Jae Yu, Seoul National Univ. (South Korea)
Chi-Hwan Kim, Seoul National Univ. (South Korea)
Sin-Doo Lee, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 5940:
Organic Field-Effect Transistors IV
Zhenan Bao; David J. Gundlach, Editor(s)

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