| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Liquid Crystal Alignment Behavior and OTFT Performance of Poly(3-hexylthiophene) Blends with Comb-like Poly(oxyethylene) |
| 초록 |
Alignment characteristics of nematic liquid crystal (LC) on the surface of conjugated semi-conducting polymer blends with a comb-like polymer were studied. Conoscopic polarized optical microscope images show vertical alignment of LC on the blend films regardless of blend ratio. The LC alignment behavior on the blended film surface can be explained by a preponderance of comb-like polymers at the film surface. The mobility values of organic thin film transistors (OTFT) prepared with the blend film as an active layer are found to be similar to those with a pure conjugated semi-conducting polymer film. Since a percolation threshold exists at a certain comb-like polymer concentration in the blend that is required for stable OTFT performance, this study suggests a novel route for effectively reducing the amount of active semi-conducting polymer without significant deterioation of charge carrier mobility in OTFT devices. |
| 저자 |
배진우, 송기국
|
| 소속 |
경희대 |
| 키워드 |
Polymer blend; Comb-like polymer; Surface property; Liquid crystal alignment; Organic thin film transistor
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| E-Mail |
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