Samu Gergely F, Janáky Csaba
Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Rerrich Square 1, Szeged H-6720, Hungary.
ELI-ALPS Research Institute, Wolfgang Sandner Street 3, Szeged H-6728, Hungary.
J Am Chem Soc. 2020 Dec 30;142(52):21595-21614. doi: 10.1021/jacs.0c10348. Epub 2020 Dec 18.
Metal-halide perovskites transformed optoelectronics research and development during the past decade. They have also gained a foothold in photocatalytic and photoelectrochemical processes recently, but their sensitivity to the most commonly applied solvents and electrolytes together with their susceptibility to photocorrosion hinders such applications. Understanding the elementary steps of photocorrosion of these materials can aid the endeavor of realizing stable devices. In this Perspective, we discuss both thermodynamic and kinetic aspects of photocorrosion processes occurring at the interface of perovskite photocatalysts and photoelectrodes with different electrolytes. We show how combined in situ and operando electrochemical techniques can reveal the underlying mechanisms. Finally, we also discuss emerging strategies to mitigate photocorrosion (such as surface protection, materials and electrolyte engineering, etc.).
在过去十年中，金属卤化物钙钛矿改变了光电子学的研发方向。它们最近在光催化和光电化学过程中也站稳了脚跟，但它们对最常用的溶剂和电解质的敏感性以及对光腐蚀的易感性阻碍了此类应用。了解这些材料光腐蚀的基本步骤有助于实现稳定器件的努力。在这篇综述中，我们讨论了在钙钛矿光催化剂和光电极与不同电解质的界面发生的光腐蚀过程的热力学和动力学方面。我们展示了原位和操作电化学技术相结合如何揭示潜在机制。最后，我们还讨论了减轻光腐蚀的新兴策略（如表面保护、材料和电解质工程等）。
