| 학회 |
한국화학공학회 |
| 학술대회 |
2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 |
28권 1호, p.616 |
| 발표분야 |
[주제 9] 에너지 전환 |
| 제목 |
Intermediate phase control for highly oriented MAPbI3 perovskite with ambient air process |
| 초록 |
Despite the intermediate phase-induced slow crystallization using dimethyl sulfoxide (DMSO) as co-solvent increased the inorganic-organic perovskite solar cells (PSCs) efficiency significantly, generally PSCs are fabricated via fast crystallization process to protect a perovskite layer from H2O or O2 in ambient air. Whereas we suggest a possibility of slow crystallization process for MAPbI3 perovskite crystals via intermediate phase formation by adjusting the humidity of air at RH 2-30%. We obtained high quality perovskite grains in slow crystallization process by antisolvent and the ratio of DMSO in precursor solution at RT 2-30%. The amount and state of the intermediate phase inside the as-deposited film were analyzed from grazing incidence wide angle x-ray scattering (GIWAXS) measurement. The deposited perovskite layer with the pure intermediate with extremely slow crystallization showed highest absorption, few grain boundaries and suppressed defect recombination losses than fast crystallized perovskite phase. As a result, we obtained the long stability and high power conversion efficiency up to 18.56% in a p-i-n structured MAPbI3 based perovskite solar cell under ambient air. |
| 저자 |
홍승연, 김효정
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| 소속 |
부산대 |
| 키워드 |
공정시스템(Process Systems Engineering) |
| E-Mail |
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| 원문파일 |
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