| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
Efficient green solvent-processable flexible solar cells using a donor-acceptor semiconducting polymer with a random configuration |
| 초록 |
We introduced thiophene units into the backbone of a semiconducting polymer in either a regular (PffBT-T4) or a random (PffBT-RT4). Since they share the same ratio of subunits in their backbone, both polymers have similar energy levels; however, PffBT-RT4 has lower crystallinity than PffBT-T4 due to its random configuration. In microstructural analyses, PffBT-RT4 has a shorter π-π stacking distance than PffBT-T4, resulting in enhanced interchain charge transport. PffBT-RT4 has higher space-charge-limited current mobility and solar cells with PffBT-RT4 exhibit higher power conversion efficiency (PCE: 8.84%) than their PffBT-T4 counterparts (7.25%). Furthermore, solar cells with PffBT-RT4, prepared using a green solvent without any additives, achieve an encouraging PCE of 7.23%. In addition, PffBT-RT4 exhibited improved mechanical stability. |
| 저자 |
민지현, 이준우, 김태현, 정다솔, 최예림, 박태호
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| 소속 |
POSTECH |
| 키워드 |
Organic Solar Cell; random conjugated polymer; Green-solvent; Flexible
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| E-Mail |
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