| 학회 |
한국고분자학회 |
| 학술대회 |
2010년 가을 (10/07 ~ 10/08, 대구 EXCO) |
| 권호 |
35권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Synthesis and Characterization of Cyclopentadithiophene-Based Low Bandgap Copolymers Containing Electron-Deficient Benzoselenadiazole Derivatives for Photovoltaic Devices |
| 초록 |
We have synthesized two cyclopentadithiophene (CDT)-based low bandgap copolymers for use in photovoltaic applications. Through the internal charge transfer interaction between the electron-donating CDT unit and the electron-accepting benzoselenadiazole, we realized exceedingly low bandgap polymers with bandgaps of 1.371.46 eV. These two polymers exhibited excellent stability, losing less than 5% of their weight upon heating to ~371383oC. In addition, the glass transition temperatures (Tg) of these polymers were nearly identical, ~106oC. When the synthesized polymer was blended with PC71BM, it showed the best performance, with an open circuit voltage of 0.55 V, a short-circuit current of 6.63 mA/cm2, and a power conversion efficiency of 1.34% under air mass 1.5 global illumination conditions. |
| 저자 |
정인환1, 김호연2, 우한영3, 유승협2, 심홍구4
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| 소속 |
1한국과학기술원, 2한국과학기술원 전자공학과, 3부산대, 4한국과학기술원 화학과 |
| 키워드 |
Benzoselenadiazole; low bandgap polymer
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| E-Mail |
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