Probing lattice vibrations of stabilized CsPbI<sub>3</sub> polymorphs <i>via</i> low-frequency Raman spectroscopy
Yi Yang, Jason P. Robbins, Lotanna Ezeonu, Yichen Ma, Nicholas Sparta, Xiaoqing Kong, Stefan Strauf, Simon G. Podkolzin, Stephanie S. Lee
Abstract
The low-frequency Raman spectra of metal-halide perovskites are reported using a combination of a 976 nm laser and nanoconfinement to stabilize the crystals against temperature-induced polymorph transitions and humidity-induced degradation.
Topics & Concepts
Raman spectroscopyMaterials scienceLattice vibrationSpectroscopyLattice (music)VibrationCrystallographyLow frequencyMolecular vibrationMolecular physicsNuclear magnetic resonanceCondensed matter physicsPhononOpticsPhysicsChemistryAcousticsQuantum mechanicsAstronomyPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyOptical properties and cooling technologies in crystalline materials