How antisolvent miscibility affects perovskite film wrinkling and photovoltaic properties
- Journal: nature communications
- Published Year: 2021
- Authors: Seul-Gi Kim, Jeong-Hyeon Kim, Philipp Ramming, Yu Zhong, Konstantin Schötz, Seok Joon Kwon, Sven Huettner, Fabian Panzer & Nam-Gyu Park
- Application: Perovskite Photovoltaics, Thin-Film Manufacturing, Solar devices, optoelectronics
Summary
This study explores how antisolvent miscibility controls microscopic wrinkling in mixed-cation perovskite films to enhance solar-cell performance. By varying diethyl ether temperature during DMSO-based spin coating, the authors induced tunable wrinkles (amplitude ~120 nm; wavelength ~13 µm), mapped by AFM topography. Photoconductive AFM (pc‑AFM) probed local photocurrent, showing enhanced carrier transport at wrinkle peaks. These insights tied film morphology to carrier dynamics, driving efficiency up to 23.0%, and improving stability in perovskite photovoltaics.
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