| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-무기재료 |
| 제목 |
A New Charge Transport Layer Leading to Remarkably High Open Circuit Voltage in Organic-Inorganic Hybrid Tin-based Perovskite Solar Cells |
| 초록 |
Developing less toxic alternative to lead-based halide perovskite light absorbers has been a sought goal in photovoltaics for commercialization of this technology. Among plausible candidates, tin-based perovskite materials possess the advantages such as smaller bandgaps and higher carrier mobility than lead-based materials. However, power conversion efficiency of tin-based perovskite solar cells (PSCs) is mainly limited by low open-circuit voltages (VOC) arising from mismatched energy levels between a perovskite absorber and charge transporting materials (CTMs). In this presentation, we demonstrate that a VOC of tin-based PSCs can be significantly improved by a new CTM with the well-suited energy levels to a tin-based absorber. We analyze the energy levels of components in PSCs and study charge dissociation mechanisms during light to electric energy conversion process. Our champion tin-based PSC with a new CTM exhibits a very large VOC of ~0.65V and power conversion efficiency of ~7%. |
| 저자 |
이명정, 정인
|
| 소속 |
서울대 |
| 키워드 |
solar cell; lead-free; perovskite
|
| E-Mail |
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