Surface-induced alignment of pentacene by photo-alignment technology for organic thin film transistors
- Authors
- Jin, SH; Seo, HU; Nam, DH; Shin, WS; Choi, JH; Yoon, UC; Lee, JW; Song, JG; Shin, DM; Gal, YS
- Issue Date
- 2005
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY, v.15, no.47, pp.5029 - 5036
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY
- Volume
- 15
- Number
- 47
- Start Page
- 5029
- End Page
- 5036
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/25244
- DOI
- 10.1039/b510731h
- ISSN
- 0959-9428
- Abstract
- A series of highly soluble maleimide-based polymers with photoreactive pendant group were synthesized and used as a gate dielectric insulator for organic thin film transistors. Photoalignment properties were characterized by UV-visible spectroscopy and the alignment of liquid crystals. Photopolymerization of polymer-coated organic thin film transistors with linearly polarized UV light induces anisotropy in field-effect mobility. The gate dielectric insulator based on the photoalignable maleimide shows higher field-effect mobility and on/off current ratio than those from a SiO(2) gate dielectric insulator with the values of 0.3 cm(2) V(-1) s(-1) and 10(4), respectively. Our results demonstrate that the photo-induced anisotropy of alignment films to control the molecular order of semiconducting pentacene is a promising technology for improving the performance of organic thin film transistors.
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Collections - College of Engineering > Chemical Engineering Major > 1. Journal Articles
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