Intrinsic Instability of Inorganic–Organic Hybrid Halide Perovskite Materials

Abstract Hybrid lead halide perovskite materials are used in solar cells and show efficiencies greater than 23%. Furthermore, they are applied in light‐emitting diodes, X‐ray detectors, thin‐film transistors, thermoelectrics, and memory devices. Lead trihalide hybrid materials contain methylammonium (MA) or formamidinium (FA) (or a mixture), or long alkylammonium halides, as alternative organic cations. However, the intrinsic stability of hybrid lead halide perovskites is not very high, and they are chemically unstable when exposed to moisture, light, or heat because of their organic contents and low formation energies. Therefore, although improvements in the chemical stability are crucial, changing the…

• UN
  Ulsan National Institute of Science and Technology

  Award: 1.180043.01
• NR
  National Research Foundation of Korea

  Awards: 2018R1A3B1052820, 2015M1A2A2056542, 2011‐0031565