Soft crystal lattice and large anharmonicity facilitate the self-trapped excitonic emission in ultrathin 2D nanoplates of RbPb<sub>2</sub>Br<sub>5</sub>
Jayita Pradhan, Anustoop Das, Kaushik Kundu, Chahat, Kanishka Biswas
Abstract
The presence of large anharmonicity and lattice softness in low dimensional metal halide, RbPb 2 Br 5 nanoplates, trigger strong electron–phonon coupling and consequently highly Stokes shifted broadband emission originates from self-trapped excitons.
Topics & Concepts
PhotoluminescenceAnharmonicityExcitonMaterials sciencePhononPhotoexcitationEmission spectrumMolecular physicsOptoelectronicsSpectral lineChemistryExcited stateCondensed matter physicsAtomic physicsPhysicsAstronomyPerovskite Materials and ApplicationsOptical properties and cooling technologies in crystalline materialsStrong Light-Matter Interactions