| 학회 |
한국고분자학회 |
| 학술대회 |
2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터) |
| 권호 |
37권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Importance of Solubilizing Group and Backbone Planarity in Low Band Gap Polymers for High Performance Ambipolar Field Effect Transistors |
| 초록 |
We investigated the performance of ambipolar field effect transistors based on a series of alternating low band gap polymers. The polymers contain oligothiophene units of terthiophene and thiophene-thienothiophene-thiophene and DPP units carrying branched alkyl chains of 2-hexyldecyl or 2-octyldecyl. The structural variation allows us to do a systematic study on the relationship between the interchain stacking/ordering of semiconducting polymers and their resulting device performance. we found that longer branched alkyl side chains, i.e. OD, and longer and more planar oligothiophene, i.e. T2TT, generate the more crystalline structures. Upon thermal annealing the crystallinity of the polymers was largely improved, and polymers containing longer branched alkyl chain responded faster because longer chains have larger cohesive forces than shorter chain. For all the polymers, excellent ambipolar behavior was observed with a maximum hole and electron mobility of 2.2 and 0.2 cm2V–1s–1. |
| 저자 |
이중석1, 손선경2, 송상훈3, 김현정3, 이동률1, 김경곤2, 고민재2, 최동훈4, 임호선5, 김봉수2, 조정호6
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| 소속 |
1숭실대, 2한국과학기술(연), 3서강대, 4고려대, 5전자부품(연), 6성균관대 |
| 키워드 |
Polymer field-effect transistors; Low band gap polymers; Ambipolar transistors; Crystalline structure; High carrier mobility
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| E-Mail |
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