High Phase Stability in CsPbI3 Enabled by Pb–I Octahedra Anchors for Efficient Inorganic Perovskite Photovoltaics

@article{Wang2020HighPS,
  title={High Phase Stability in CsPbI3 Enabled by Pb–I Octahedra Anchors for Efficient Inorganic Perovskite Photovoltaics},
  author={Yong Wang and Gaoyuan Chen and Dan Ouyang and Xinjun He and Can Li and Ruiman Ma and Wan-Jian Yin and Wallace C. H. Choy},
  journal={Advanced Materials},
  year={2020},
  volume={32}
}
CsPbI3 inorganic perovskite has exhibited some special properties particularly crystal structure distortion and quantum confinement effect, yet the poor phase stability of CsPbI3 severely hinders its applications. Herein, the nature of the photoactive CsPbI3 phase transition from the perspective of PbI6 octahedra is revealed. A facile method is also developed to stabilize the photoactive phase and to reduce the defect density of CsPbI3. CsPbI3 is decorated with multifunctional 4‐aminobenzoic… 
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