| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 봄 (04/10 ~ 04/11, 대전 컨벤션센터) |
| 권호 |
39권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Enhancement of Power Conversion Efficiency in Orgainc Solar Cells via Molecular Engineering of Conjugated Polymers |
| 초록 |
Nanomorphology control in bulk heterojunction (BHJ) organic photovoltaics cell is one of the most important issues to achieve a high power conversion efficiency (PCE). Low miscibility of conjugated polymers with fullerene derivatives often induces large phase separation in the polymer:fullerene BHJ film, resulting in poor photocurrent generation. We introduce a facile and generally applicable method to improve the polymer’s compatibility with fullerene derivatives. We developed a series of conjugated polymers (PTBDCBXs) incorporating a functional group which can effectively interact with fullerene derivatives. The morphology of the PTBDCBX:PC71BM BHJ film was improved and showed 10 nm scale phase separation compared with the unmodified polymer. As a result, the solar cell device employing PTBDCBX showed a PCE close to 8% due to increased photocurrent densities. Regarding the relation of the polymer’s chemical structure with morphological properties and the solar cell performance. |
| 저자 |
박성민1, 손해정2, 류태인1
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| 소속 |
1한국과학기술(연), 2고려대 |
| 키워드 |
organic photovoltaics; p-type material; morphology control; conjugated polymers.
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| E-Mail |
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