| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Rationally Designed Donor-Acceptor Random Copolymers with Optimized Complementary Light Absorption for Highly Efficient All-Polymer Solar Cells |
| 초록 |
All-polymer solar cells (all-PSCs), with the advantages of superior light absorption and endurances, are highly promising alternatives to conventional fullerene-based PSCs. Indeed, most of the high-performance all-PSCs reported to date overlap with the light absorption region of polymer donor and acceptor, which limits the efficiency of all-PSCs. Herein, we report a systematical investigation of complementary absorption with a series of random copolymers and polymer acceptor P(NDI2HD-T2) for highly efficient all-PSCs. By controlling the molar ratio of the electron-rich BDTT and electron-deficient TT-F units, a series of polymer donors with BDTT:TT-F ratio of 1:1 (P1), 3:1 (P2), 5:1 (P3), and 7:1 (P4) are developed. The synthetic polymer donors lead to precise control of light absorption properties. All-PSCs are fabricated from these polymer donors, and the P3:P(NDI2HD-T2) device achieves the highest power conversion efficiency of 6.81 % due to the most complementary absorption. |
| 저자 |
김상우1, 최준형2, Thi Thu Trang Bui1, 이창연2, 조창순3, 나광민4, 정지혜1, 송창은2, Biwu Ma5, 이정용2, 신원석5, 김범준2
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| 소속 |
1Department of Chemical and Biomolecular Engineering, 2Korea Advanced Institute of Science and Technology (KAIST), 3Center for Solar Energy Materials, 4Korea Research Institute of Chemical Technology (KRICT), 5Graduate School of Energy Environment Water and Sustainability (EEWS) |
| 키워드 |
all-polymer solar cell; complementary absorption; D-A random copolymer
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| E-Mail |
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