| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Controlling random configuration of thiophene units for mechanically stable solar cells. |
| 초록 |
In this study, we study on the relationship between morphologies and optoelectronic/mechanical properties of polymer solar cells. Introducing thiophene unit as a regular (PffBT-4T) or random (PffBT-RT4) is needed for the study of developing flexibility. The difference of the PffBT-4T and PffBT-RT4 is only configuration, so the energy level, which has effect on charge transport and recombination in the device, of both polymers are equal. PffBT-RT4 exhibits low crystallinity and shorter π-π distance than PffBT-4T, and it leads to the high efficiency of 8.84% comparing to PffBT-4T (7.25%) due to improved interchain charge transporting abilities. In addition, PffBT-RT4 based flexible solar cells showed better mechanical robustness, maintaining its initial level after 100 bending cycles at a bending radius of 4.5 mm. Moreover, for the PffBT-RT4:PC71BM film, the out-of-plane (100) peak intensity decreased only slightly even after 100 stretches. |
| 저자 |
최예림, 박상아, 이대환, 정우택, 윤선희, 박태호
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| 소속 |
포항공과대 |
| 키워드 |
flexible solar cells; organic photovoltaics; stretchable solar cells; random configuration
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| E-Mail |
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