Affiliation:
1. Key Laboratory of Micro‐Nano‐Electronics and Software Technology of Guizhou Province College of Big Data and Information Engineering Guizhou University Guiyang 550025 China
2. Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology (HUST) Wuhan 430074 China
Abstract
AbstractIt is widely believed that excess/residual lead iodide (PbI2) can affect the performance of perovskite solar cells . Moderate PbI2can enhance efficiency by passivating defects, while extremely active PbI2leads to non‐negligible hysteresis effects and reduces device stability. Although several efforts are made to investigate the role of excess PbI2, its impact is still underestimated. Recent advances further demonstrate the extraordinary potential of modifying excess PbI2; however, a comprehensive study is required to obtain a deeper understanding. Herein, the important breakthroughs regarding excess PbI2are reviewed and the mechanism of excess PbI2in terms of efficiency and stability is rethought. In addition, the origins, verification, and regulation of residual PbI2are summarized.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Hubei Province
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
45 articles.
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