| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ |
| 제목 |
New Polymer Acceptors Containing the Same Building Block of Polymer Donors to Enhance Interfacial Compatibility, Mechanical Robustness, and High Efficiency of All-Polymer Solar Cells |
| 초록 |
Recently, new types of polymer acceptors (PAs) consisting of non-fullerene small molecule acceptors (NFSMAs) with strong light absorption have been proposed to enhance the power conversion efficiency (PCE) of All polymer solar cells (all-PSCs). 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. One approach to increase compatibility in these systems is to design PAs that contain the same building blocks as their polymer donor (PD) counterparts. Here we report a series of NFSMA-based PAs [P(BDT2BOY5-X), (X = H, F, Cl)], 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, mechanical, and electronic properties. |
| 저자 |
이진우1, Cheng Sun2, 마부수1, 김형준1, 김택수1, 김윤희2, 권순기2, 김범준1
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| 소속 |
1KAIST, 2경상대 |
| 키워드 |
all-polymer solar cells; BDT-based polymer acceptor; mechanical robustness; stretchability; molecular compatibility
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| E-Mail |
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