| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ,Ⅱ |
| 제목 |
Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility Enable Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells |
| 초록 |
All-polymer solar cells (all-PSCs) are a highly attractive class of photovoltaics. Recently, new types of polymer acceptors (PAs) consisting of non-fullerene small molecule acceptors (NFSMAs) with strong light absorption have been proposed. However, polymerization of NFSMAs often reduces entropy of mixing in PSC blends and prevents the formation of intermixed blend domains required for efficient charge generation and morphological stability. Here, a series of NFSMA-based PAs [P(BDT2BOY5-X), (X = H, F, Cl)] are reported, by copolymerizing NFSMA (Y5-2BO) with benzodithiophene (BDT), a common donating unit in high-performance PDs such as PBDB-T. All-PSC blends composed of PBDB-T PD and P(BDT2BOY5-X) PA show enhanced molecular compatibility, resulting in excellent morphological and electronic properties. Additionally, the increased compatibility of these all-PSCs greatly improves their thermal stability and mechanical robustness. |
| 저자 |
이진우1, Cheng Sun2, 마부수1, 김택수1, 권순기2, 김윤희2, 김범준1
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| 소속 |
1KAIST, 2경상대 |
| 키워드 |
all-polymer solar cells; BDT-based polymer acceptor; molecular compatibility; stretchability
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| E-Mail |
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