Nanoscale-Resolved Surface-to-Bulk Electron Transport in CsPbBr<sub>3</sub> Perovskite
S. Polishchuk, Michele Puppin, A. Crepaldi, G. Gatti, Dmitry N. Dirin, Olga Nazarenko, Nicola Colonna, Nicola Marzari, Maksym V. Kovalenko, M. Grioni, Majed Chergui
Abstract
lead halide perovskite. The decay time exhibits a pronounced carrier density dependence, which is attributed via modeling to enhanced diffusive transport and concurrent recombination. The transport is found to approach an ordinary diffusive regime, limited by electron-hole scattering, at the highest excitation fluences. This approach constitutes an important milestone in our capability to probe hot-carrier transport at solid interfaces with sub-nanometer resolution in a theoretically and experimentally challenging, yet technologically relevant, high-carrier-density regime.
Topics & Concepts
Perovskite (structure)Materials scienceFemtosecondCharge carrierNanoscopic scaleOptoelectronicsElectronPhotoexcitationExcitationNanotechnologyChemical physicsChemistryOpticsPhysicsLaserCrystallographyQuantum mechanicsPerovskite Materials and ApplicationsElectronic and Structural Properties of OxidesQuantum Dots Synthesis And Properties