The effect of interfacial roughness on the electrical properties of organic thin film transistors with anisotropic dielectric layer
- Authors
- Jung, Jae Il; Song, June Yong; Kim, Jae Hoon; Kim, Hak Rin
- Issue Date
- Jan-2007
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- anisotropic interfacial effect; liquid crystal alignment; molecular ordering; obliquely evaporated SiO2; organic thin film transistor; pentacene
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.476, pp.403 - 409
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 476
- Start Page
- 403
- End Page
- 409
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180564
- DOI
- 10.1080/15421400701735673
- ISSN
- 1542-1406
- Abstract
- We investigated interfacial roughness effect of pentacene-based organic thin film transistors on an anisotropic insulator fabricated by obliquely evaporated silicon dioxide. It was observed that the obliquely evaporated gate dielectric layer affected molecular ordering of evaporated pentacene molecules. As the evaporation angle of SiO2 increased, the anisotropic interaction at the dielectric interface and the ordering of organic semiconductor molecules increased. We obtained the anisotropic ratio of the field-effect mobility for carriers transported parallel and perpendicular to the evaporation direction was 2.9.
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