| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
분자전자 부문위원회 |
| 제목 |
Intermediate phase tailoring for highly oriented MAPbI3 perovskite under ambient air |
| 초록 |
We suggest a possibility of slow crystallization process for MAPbI3 perovskite crystals via intermediate phase formation by adjusting the humidity of air at RH 20-30%. We obtained high quality perovskite grains in slow crystallization process by antisolvent and the ratio of DMSO in precursor solution at RT 20-30%. 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 with RH20-30%. |
| 저자 |
홍승연, 김효정
|
| 소속 |
부산대 |
| 키워드 |
perovskite; air process; solvent engineering
|
| E-Mail |
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