Structure and Performance Evolution of Perovskite Solar Cells under Extreme Temperatures
Guixiang Li, Zhenhuang Su, Meng Li, Harrison Ka Hin Lee, Ram Datt, Declan Hughes, Chenyue Wang, Marion A. Flatken, Hans Köbler, José J. Jerónimo-Rendon, R. Mathew Roy, Feng Yang, Jorge Pascual, Zhe Li, Wing Chung Tsoi, Xingyu Gao, Zhao‐Kui Wang, Michael Saliba, Antonio Abate
Abstract
Abstract Metal halide perovskite solar cells may work for application in extreme temperatures, such as those experienced under extraterrestrial conditions. However, device performances in extreme temperatures are poorly investigated. This work systematically explores the performance of perovskite solar cells between −160 and 150 °C. In situ grazing‐incidence wide‐angle X‐ray scattering discloses perovskite phase transition and crystal disordering as dominant factors for the temperature‐dependent device efficiency deterioration. It is shown that perovskite lattice strain and relaxation originating from extreme temperature variations are recoverable, and so are the perovskite structure and photovoltaic performances. This work provides insights into the functioning under extreme temperatures, clarifying bottlenecks to overcome and the potential for extraterrestrial applications.