Understanding the stability origins of ambient stable CsPbI<sub>2</sub>Br inorganic halide perovskites
Congtan Zhu, Feiyu Lin, Lin Zhang, Si Xiao, Shupeng Ma, Sheng Liu, Qidong Tai, Zhu Liu, Qilin Dai, Xueyi Guo, Ying Yang
Abstract
Pb–O bonds formed by O 2 before annealing which block the phase transition of CsPbI 2 Br from α to δ -phase. Moisture can promote the formation of Pb–O bonds, which enhance the phase stability of CsPbI 2 Br in ambient conditions.
Topics & Concepts
HalideAnnealing (glass)Materials scienceInorganic chemistryPhase transitionMineralogyChemical engineeringChemistryCrystallographyThermodynamicsMetallurgyPhysicsEngineeringPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyThermal Expansion and Ionic Conductivity