| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-에너지저장·변환 |
| 제목 |
Tailored crystal orientation of CsPbI2Br via controlled halide doping and cation exchange process for efficient all-inorganic perovskite solar cells |
| 초록 |
High-quality perovskite film is a key aspect contributing to high photovoltaic performance of all-inorganic perovskite solar cells. We herein demonstrate that the addition of methylammonium iodide (MAI) influences effectively on both tailored film morphology and precise crystal growth to construct a high-quality CsPbI2Br films. It is found that the MAI additive retards the crystallization kinetics to control the inorganic perovskite films to be highly crystalline α-CsPbI2Br structure consisting of micro-sized grains and reduced defect density. The optimal MAI additive (10%) achieves 9.18% of power conversion efficiency (PCE) of the CsPbI2Br-based all-inorganic perovskite solar cells, which is ＞30% enhancement from 7.06% of the pristine one. Besides, the controlled CsPbI2Br–based devices exhibited much improved thermal stability maintaining ＞90% of the initial PCEs under continuous heating at 85 °C for 30 h. |
| 저자 |
김경수, 정재웅
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| 소속 |
경희대 |
| 키워드 |
perovskite solar cell; CsPbI2Br; inorganic perovskite; additives
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| E-Mail |
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