Perovskite Photovoltaics: The Significant Role of Ligands in Film Formation, Passivation, and Stability
Perovskite Photovoltaics: The Significant Role of Ligands in Film Formation, Passivation, and Stability
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DOI：
10.1002/adma.201805702
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发表时间：
2019-01
影响因子：
29.4
通讯作者：
Hong Zhang;M. Nazeeruddin;W. Choy
中科院分区：
文献类型：
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作者：
Hong Zhang;M. Nazeeruddin;W. Choy
金属卤化物钙钛矿由于其优异的光电性能，近年来得到了广泛的研究。最新认证的钙钛矿太阳能电池(PVSCs)的效率为23.3%，这使它们成为下一代光伏非常有前途的候选者。钙钛矿膜的形貌、缺陷密度和耐水性对PVSCs的性能和稳定性有很大的影响。具有配位能力的配体已被广泛开发，以显著提高钙钛矿材料的质量和稳定性。在本综述的第一部分中，讨论了配体在不同方法(一步法、两步法和沉积后处理)制备钙钛矿薄膜中的作用。第二部分综述了钙钛矿形成过程中的后处理、形成过程中的原位钝化以及形成钙钛矿前的基质修饰等方面的研究进展。第三部分从晶体交联、尺寸工程和界面修饰三个方面对配体稳定的钙钛矿膜进行了讨论。最后，对全文进行了总结和展望。
Due to their outstanding optoelectronic properties, metal halide perovskites have been intensively studied in recent years. The latest certificated efficiency of 23.3% recently achieved in perovskite solar cells (PVSCs) enables them to be used as a very promising candidate for next‐generation photovoltaics. The morphology, defect density, and water resistance of perovskite films have an enormous impact on the performance and stability of PVSCs. Ligands, with coordinating capability, have been widely developed to improve the quality and stability of perovskite materials significantly. In the first section of this review, the role of ligands in fabricating perovskite films by different methods (one‐step, two‐step, and postdeposition treatment) is discussed. In the second section, the progress on ligand‐passivated perovskites via post‐treatment, in situ passivation during perovskite formation, and modifying the substrates before perovskite formation is reviewed. In the third section, a discussion of ligand‐stabilized perovskite films from the perspectives of crystal crosslinking, dimensionality engineering, and interfacial modification is presented. Finally, a summary and an outlook are given.