| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
고분자_포스터 |
| 제목 |
Efficiency Enhancement of Polymer Solar Cells by Incorporating Pyrene-Driven Self-Assembly in Benzo[1,2 b:4,5 b′]dithiophene (BDT)−Thienothiophene(TT)−Pyrene Copolymers |
| 초록 |
A series of benzo[1,2-b:4,5-b′]-dithiophene-based random copolymers including pyrene units were polymerized and characterized. Pyrene-driven self-assembly in Benzodithiophene (BDT) based random copolymers was systematically investigated by a variety of measurements. We demonstrated pyrene−pyrene interactions enabled the copolymers to construct fibrous and interconnected structures. As the concentration of Pyrene unit increased, multiple Pyrene−Pyrene interactions were dominant in a few polymer chains and these interactions derived to form a more ordered phase but less interconnectivity among many polymer chains. A threshold concentration of the Pyrene unit induced the Pyrene−Pyrene interactions to propagate over many polymer chains to develop a highly interconnected structure that increased the charge transport ability and thus the photovoltaic performances of resulting bulk heterojunction (BHJ) polymer solar cells were improved (5.03 → 7.52%). |
| 저자 |
김민준, 이준우, 박태호
|
| 소속 |
POSTECH |
| 키워드 |
pyrene; benzothiophene; bulk heterojunction
|
| E-Mail |
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