| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Side chain engineering of cyclopentadithiophene based conjugated polymers for high-performance organic thin-film transistors |
| 초록 |
Conjugated polymers based on cyclopentadithiophene (CPDT) moieties widely used in optoelectronic devices are rarely applicated in thin-film transistors (TFTs). This is because the steric hindrance at the tetrahedral center of the CPDT core deteriorates the polymer crystallinity and solubility. In this work, high-mobility conjugated copolymers based on CPDT are synthesized through side chain engineering of the polymers. The addition of bulky ethylhexyl side chains to CPDT does not interfere with the molecular ordering when linear alkyl side chains based on co-monomeric moieties are combined. The polymer shows excellent π–π interactions, good solubility, and bimodal orientated packing structure with strong intercalation of linear alkyl side chains in the thin film states. As a result, the optimized TFTs achieve the hole mobilities of 1.08–1.64 cm2 V−1 s−1, which are the highest mobilities among the reported CPDT based conjugated polymers with branched alkyl side chains. |
| 저자 |
이규민1, 정문기2, 서의현1, 정원조1, 오종규1, 정인환1, 장재영1
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| 소속 |
1한양대, 2서울대 |
| 키워드 |
organic thin-film transistors; donor-acceptor conjugated polymers; side chain engineering; 3D charge transport pathway
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| E-Mail |
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