| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 봄 (04/05 ~ 04/07, 대전컨벤션센터) |
| 권호 |
42권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Prediction of CH3NH3PbI3 Perovskite Morphology from Sequential Deposition Method by Kinetic Analysis |
| 초록 |
We performed a kinetic analysis of the sequential deposition method (SDM) to investigate how to form perovskite (CH3NH3PbI3) phases, and the effects of processing conditions on the final perovskite morphology. The reaction was found to consist of two periods with distinct kinetics. The first period is directly correlated to final perovskite morphology. We were able to extract the value of the rate of the phase transition during the first period by applying the Johnson-Mehl-Avrami-Kolmogorov model. Here, the reaction rate was used to predict the surface morphology of the perovskite under certain processing conditions. During the second period, the remaining lead iodide under the top perovskite layer was converted. Methylammonium iodide molecules apparently diffused into the buried PbI2 through intergrain gaps of the top perovskite layers. The current study has furthered the understanding of detailed features of the SDM, enabled a reliable prediction of the final perovskite morphology |
| 저자 |
고효민, 조길원, 양석주, 박찬의, 신동훈, 송성원
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| 소속 |
포항공과대 |
| 키워드 |
perovskite; crystal growth; solar cell
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| E-Mail |
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