Enhanced electrical stability of organic thin-film transistors with polymer semiconductor-insulator blended active layers
- Authors
- Lee, J; Jung, JY; Kim, DH; Kim, JY; Lee, BL; Park, JI; Chung, JW; Park, JS; Koo, B; Jin, YW; Lee, S
- Issue Date
- Feb-2012
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.100
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 100
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/12565
- DOI
- 10.1063/1.3688177
- ISSN
- 0003-6951
- Abstract
- We report on an enhanced electrical stability of organic thin-film transistors (OTFTs), where an organic semiconductor (poly(didodecylquaterthiophene-alt-didodecylbithiazole) (PQTBTz-C12)) and a polymer insulator (poly(methyl methacrylate) (PMMA)) blended film were used as the active layer, in comparison with a single PQTBTz-C12 OTFT. While both devices exhibit similar electrical performance in terms of mobility and ON/OFF ratios, the blended device is less susceptible to OFF-bias stress. It is suggested that the carboxyl groups of PMMA in the blend may act as suppressors with regards to hole accumulation in the channel, and thus, the PQTBTz-C12/PMMA blend based OTFTs exhibit delayed threshold voltage shifts under OFF-bias stress. (C) 2012 American Institute of Physics. [doi:10.1063/1.3688177]
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Collections - College of Engineering > Department of Organic Materials and Fiber Engineering > 1. Journal Articles
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