| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Dramatic Inversion of Charge Polarity in Diketopyrrolopyrrole-Based Organic Field-Effect Transistors via a Simple Nitrile Group Substitution |
| 초록 |
Solution-processable conjugated polymers have attracted great interest for the last three decades because of the potential to realize various flexible electronic devices based on OFETs, and OPVs via cost-effective graphic art printing processes. Here, we report simple and effective methods to obtain high mobility n-type conjugated polymers from p-type dominant ones by carefully selecting the incorporation point of an EWG (nitrile group) in the vinyl linkage of the alternating copolymer of DPP and 2,3-bis[thiophen-2-yl]acrylonitrile (PDPP-CNTVT). The attachment of only one nitrile group in the polymer backbone can effectively attract electrons through the vinyl linkage without sacrificing the extended coplanar structure of the vinyl backbone or the resulted crystallinity of the semiconducting films. Thus, the newly designed PDPP-CNTVT alternating copolymer provides a record-breaking high electron-mobility up to 7.0 cm2V−1s−1 with a relatively thin semiconducting layer. |
| 저자 |
윤희준1, 강석주2, yong Xu2, 김슬옹1, 김윤희1, 노용영2, 권순기1
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| 소속 |
1경상대, 2동국대 |
| 키워드 |
n-type organic field-effect transistors; conjugated polymers; diketopyrrolopyrrole; electron-withdrawing groups; charge trapping effect
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| E-Mail |
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