| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ |
| 제목 |
Importance of Functional Group Design for Best Pairing of Polymer Donor and Small-Molecule Acceptor in High-Performance Photovoltaics |
| 초록 |
A systematic investigation is conducted with the development of a series of acceptor–donor–acceptor–donor–acceptor fused-type SMAs, named as C6OB-H, C6OB-Me, and C6OB-F, which contain distinctive terminal substituents –H, –CH3, and –F, respectively. These SMAs are paired with two PDs, PBDT-H and PBDT-F, to study the effect of each PD/SMA pair on device performance. Interestingly, the PD/SMA pairs with similar terminal groups yield enhanced molecular and energetic interactions at the interfaces, which suppress voltage loss while improving blend morphology to simultaneously enhance the open–circuit voltage, short–circuit current, and fill factor of the OSCs. This study establishes an important PD/SMA pairing rule in terms of terminal functional groups for achieving high-performance OSC with optimal blend morphology, effective charge generation, and minimal voltage loss. |
| 저자 |
김건우1, Cheng Sun2, 박진수3, 이현경3, 김윤희2, 권순기2, 김범준3, 조신욱4, 이진우3, 김형준3, 이동찬4
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| 소속 |
1KAIST, 2Gyeongsang National Univ., 3카이스트, 4울산대 |
| 키워드 |
non-fullerene organic solar cells; terminal group pairing; interfacial interaction; blend morphology; voltage loss
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| E-Mail |
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