Highly Stable All-Inorganic Perovskite Solar Cells Processed at Low Temperature

Kai Chi Tang, Peng You, Feng Yan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

72 Citations (Scopus)


All-inorganic perovskites such as cesium lead bromide (CsPbBr3) can show much better stability than organic–inorganic hybrid perovskite materials in ambient air. However, fabricating a high-quality CsPbBr3 perovskite film normally requires a high annealing temperature, leading to the difficulty of preparing CsPbBr3 solar cells with low-temperature solution process. In this work, we demonstrated a pyridine-vapor treatment in two-step fabrication of CsPbBr3 perovskite films that can reduce the annealing temperature to about 160 °C. The mechanism is attributed to the reaction of pyridine with lead bromide, which forms an intermediate phase and leads to a low activation energy in the formation of CsPbBr3 perovskite films during thermal annealing. The devices without encapsulation show excellent stability in ambient air with the humidity up to 70%. This work provides a novel approach for preparing inorganic perovskite solar cells at low temperature.

Original languageEnglish
Article number1800075
JournalSolar RRL
Issue number8
Publication statusPublished - 1 Aug 2018


  • inorganic solar cell
  • low temperature
  • perovskite solar cell
  • pyridine
  • stability

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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