Search results for " Amplified Spontaneous Emission"

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Amplified Spontaneous Emission Properties of Solution Processed CsPbBr3 Perovskite Thin Films

2017

Metal halide perovskites are currently emerging as highly promising optoelectronic materials. It has been recently demonstrated that fully inorganic solution processed CsPbBr3 perovskite thin films show good electroluminescence properties combined with high thermal stability. In this work, we investigate in details the amplified spontaneous emission (ASE) properties of CsPbBr3 perovskite thin films, as a function of the temperature and the trap density, modified by changing the CsBr-PbBr2 precursor concentration. ASE is observed in samples from both CsBr-rich solution (low trap density) and equimolar solution (higher trap density), up to about 150 K, with a minimum threshold of 26 and 29 mu…

Amplified spontaneous emissionMaterials scienceExcitonAnalytical chemistryHalide02 engineering and technologyPerovskites Amplified Spontaneous EmissionElectroluminescence010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsMetalGeneral Energyvisual_artvisual_art.visual_art_mediumThermal stabilityPhysical and Theoretical ChemistryThin film0210 nano-technologyPerovskite (structure)The Journal of Physical Chemistry C
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Amplified spontaneous emission in thin films of quasi-2D BA3MA3Pb5Br16 lead halide perovskites

2021

Quasi-2D (two-dimensional) hybrid perovskites are emerging as a new class of materials with high photoluminescence yield and improved stability compared to their three-dimensional (3D) counterparts. Nevertheless, despite their outstanding emission properties, few studies have been reported on amplified spontaneous emission (ASE) and a thorough understanding of the photophysics of these layered materials is still lacking. In this work, we investigate the ASE properties of multilayered quasi-2D BA3MA3Pb5Br16 films through the dependence of the photoluminescence on temperature and provide a novel insight into the emission processes of quasi-2D lead bromide perovskites. We demonstrate that the …

Amplified spontaneous emissionPhotoluminescenceMaterials sciencequasi-2D perovskite Amplified spontaneous emission PhotoluminescenceHalideLaserlaw.inventionChemical physicslawPhase (matter)General Materials ScienceThin filmAbsorption (electromagnetic radiation)MaterialsExcitation
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