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- W3204752130 abstract "Over the past few years, organic-inorganic halide 3D perovskites were found to present remarkable optoelectronic properties. A great attention has been paid to perovskites thin films, as an ideal building block for PV and LED devices. On the other hand, the study of single crystals has proven necessary to unveil some of the intrinsic properties of these semiconductors. The family of organic-inorganic halide perovskites is large and other compounds of this family, such as the 2D ones, have been known for a longer time. Due to their natural quantum well structure and a high exciton dielectric confinement, the 2D organic-inorganic halide 2D perovskites exhibit high oscillator strengths and strong photolominescence properties, which make them particularly relevant for light-emitting devices. In the past, several works have been done to demonstrate the strong coupling regime at room temperature between excitons and photon modes in vertical microcavities or in the distributed feedback geometry , or between excitons and plasmons . More recently, 2D perovskites have proved to be interesting also for photovoltaics with efficiencies close to 14 % and a better stability than their 3D counterpart . Nevertheless, many of the fundamental photophysics properties of these 2D perovskites, such as the recombination dynamics of the excitons and the charge separation mechanisms, remain to understood. Monorystalline thin films of phenylethylammonium-based 2D perovskites are produced using the Anti-solvent Vapor Assisted Capping Crystalllization. A cryogenic micro-photoluminescence study of these samples will be presented (with a sub micrometer precision), allowing to extract the intrinsic properties of the perovskite crystals. In particular, the exciton recombination dynamics will be studied using time-resolved micro-photoluminescence as function of fluence and temperature. The project leading to this application has received funding from the European Union’s Horizon 2020 programme, through a FET Open research and innovation action under grant agreement No 687008." @default.
- W3204752130 created "2021-10-11" @default.
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- W3204752130 date "2018-12-05" @default.
- W3204752130 modified "2023-10-14" @default.
- W3204752130 title "Exciton recombination dynamics in phenylethylammonium based 2D-layered hybrid perovskite monocrystalline thin films." @default.
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