Strong electron–phonon coupling in vacancy-ordered Cs <sub>2</sub> SnBr <sub>6</sub> double perovskite
C. C. S. Soares, Juan S. Rodríguez-Hernández, Mayra A. Padrón Gómez, Davino M. Andrade Neto, Pierre Basílio Almeida Fechine, Alejandro Pedro Ayala, C. W. A. Paschoal
Abstract
This material exhibits high-order multiphonon scattering mediated by strong electron–phonon coupling. The broad luminescence and large Stokes shift suggest the presence of self-trapped excitons within the material.
Topics & Concepts
Materials scienceExcitonPhononCoupling (piping)Perovskite (structure)LuminescenceVacancy defectElectronScatteringCondensed matter physicsChemical physicsStokes shiftMolecular physicsCrystallographyOptoelectronicsPhysicsOpticsChemistryQuantum mechanicsMetallurgyPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyAdvanced Condensed Matter Physics