Temperature-dependence of the band gap in the all-inorganic perovskite CsPbI<sub>3</sub> from room to high temperatures
Jinyan Ning, Liangliang Zheng, Wenxin Lei, Shenghao Wang, Jinyang Xi, Jiong Yang
Abstract
, and due to the strong correlation between Pb and I, the Pb-I bond lengths and Pb-I-Pb bond angles are almost unchanged as the temperature increases. Our work provides a fundamental understanding of the temperature-dependent band gaps in all-inorganic perovskites and shed light on the commercialization of perovskites.
Topics & Concepts
Band gapPerovskite (structure)Orthorhombic crystal systemTetragonal crystal systemCondensed matter physicsMaterials sciencePhase (matter)Atmospheric temperature rangeDirect and indirect band gapsChemistryCrystallographyCrystal structureOptoelectronicsThermodynamicsPhysicsOrganic chemistryPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyThermal Expansion and Ionic Conductivity