Unravelling phase-dependent electronic dimensionality and optoelectronic properties in lead-free layered A<sub>3</sub>B<sub>2</sub>X<sub>9</sub> perovskites for photovoltaic applications
Qingyuan Luo, Dabao Xie, Yiqian Tian, Congmin Zhang, Dan Cao, Xiaoshuang Chen, Pei Liang, Haibo Shu
Abstract
The phase stability mechanism of all-inorganic lead-free layered A 3 B 2 X 9 perovskites is revealed and Cs 3 B 2 I 9 (B = Sb and Bi) in trigonal phase are predicted as promising photovoltaic materials with high power conversion efficiencies (∼20%).
Topics & Concepts
Photovoltaic systemCurse of dimensionalityMaterials scienceLead (geology)Phase (matter)OptoelectronicsNanotechnologyComputer scienceChemistryElectrical engineeringEngineeringGeologyArtificial intelligenceOrganic chemistryGeomorphologyPerovskite Materials and ApplicationsConducting polymers and applicationsChalcogenide Semiconductor Thin Films