In-depth understanding the temperature-dependent reversible phase transition in CsPbI<sub>3−<i>x</i></sub>Br<sub><i>x</i></sub> perovskites and its associated photophysical properties
Songyang Yuan, Jiahuan Deng, Hui Xiong, Wenwen Wu, Zhipeng Ma, Mengqi Wang, Wenzhe Li, Jiandong Fan
Abstract
Temperature-dependent phase transition of CsPbI 3− x Br x perovskite is synchronously observed in a reciprocal space, and its photophysical properties are systematically studied by exploring the carrier–phonon coupling and excitons transport.
Topics & Concepts
Perovskite (structure)Phase transitionReciprocal latticeExcitonReciprocalCondensed matter physicsMaterials scienceCoupling (piping)Phase (matter)PhononCrystallographyChemistryPhysicsOpticsDiffractionQuantum mechanicsLinguisticsMetallurgyPhilosophyPerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materialsSolid-state spectroscopy and crystallography