期刊
ADVANCED ENERGY MATERIALS
卷 12, 期 4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.202100690
关键词
formamidinium-dominated perovskites; high-performance; long-term stability; phase-stability; photovoltaics
类别
资金
- National Natural Science Foundation of China [21771114, 91956130]
- Distinguished Young Scholars of Tianjin [19JCJQJC62000]
Organic-inorganic hybrid perovskite materials have gained widespread attention in the field of photovoltaics, with stabilizing the alpha phase and achieving high-quality films being key for achieving high efficiency and long-term stability in perovskite photovoltaics. Methods to eliminate defects and improve carrier transport are crucial for high-performance photovoltaic devices.
Organic-inorganic hybrid perovskite materials have attracted widespread attention in the photovoltaic field. The best-certified perovskite single-junction photovoltaics have achieved an impressive power conversion efficiency of 25.5%. Particularly, formamidinium lead triiodide (FAPbI(3)) perovskite material has been considered to be one of the most promising materials for fabricating highly efficient single-junction solar cells due to its suitable bandgap (1.43 eV). However, the metastable alpha-FAPbI(3) perovskite phase, which can spontaneously transform into the undesirable delta phase, limits their further applications. Accordingly, stabilizing the alpha phase and achieving high-quality films are keys for achieving high-efficiency and long-term operational perovskite photovoltaics. In this review, strategies for stabilization of alpha-FAPbI(3) are discussed in detail, and the corresponding thermodynamic mechanisms are also summarized. Moreover, the methods to eliminate defects and improve carrier transport are thoroughly reviewed, which is important for achieving high-performance photovoltaic devices with outstanding long-term operational stability. Finally, possible the future research directions of FAPbI(3) photovoltaics toward commercialization are discussed.
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