| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Pyrene-Driven Self-Assembly for Improved Interconnectivity in Benzo[1,2‑b:4,5‑b′]dithiophene (BDT)−Thienothiophene(TT)−Pyrene Copolymers for Polymer Solar Cell |
| 초록 |
We polymerized and characterized a series of benzo[1,2-b:4,5-b′]-dithiophene-based random copolymers including pyrene units. Concentration-dependent pyrene-driven self-assembly in the resulting copolymers was systematically investigated by a variety of measurements. The pyrene−pyrene interactions were found to enable the copolymers to construct fibrous and interconnected structures. As the content of Pyrene unit increased, multiple Pyrene−Pyrene interactions within a few polymer chains were dominant and these interactions induced to form a more ordered phase but less interconnectivity among many polymer chains. A threshold amount of the Pyrene unit facilitated the Pyrene−Pyrene interactions to propagate over many polymer chains to form a highly interconnected structure that improved hole transport pathways and, thus, the photovoltaic performances of resulting bulk heterojunction polymer solar cells were increased (5.03 → 7.52%). |
| 저자 |
이종철1, 신원석1, 이상규1, 박태호2, 김민준2
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| 소속 |
1KRICT, 2POSTECH |
| 키워드 |
OPV; Pyrene; Random Copolymer; solar cell
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| E-Mail |
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