| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1945 |
| 발표분야 | 재료 (Materials) |
| 제목 | Effect of solvent blends on the morphology and efficiency of Perovskite solar cells |
| 초록 | Although the most popular method currently used to fabricate perovskite active layer is a two-step method, one of biggest issues of the two-step method is the difficulty in controlling the morphology of the perovskite thin films. Here, we focused on improving the quality of the perovskite thin films by adding isobutyl alcohol as an additive into CH3NH3I solution used for spin coating onto PbI2 / (DMF+ DMSO) film in the second step, resulting in uniform and pinhole-free film. According to the SEM study, when the ratio of isobutyl alcohol additive in the mixed solvents reached to 5%, perovskite film morphology was significantly improved, due probably to the evaporation rate of isobutyl alcohol being higher than isopropanol, leading to a slow crystallization process of the perovskite films. The enhancement on CH3NH3PbI3 thin film quality is beneficial for increasing the absorbtion of perovskite film and the photovoltaic performace of perovskite solar cell. Keywords: perovskite solar cell, additive, isobutyl alcohol, two-step method, film morphology. |
| 저자 | 레반남, Nguyen Truong, Trang T.T Le, 박진호 |
| 소속 | 영남대 |
| 키워드 | 재료 |
| 원문파일 | 초록 보기 |
