Interband nonradiative Auger recombination in quantumwell InGaAsP/InP heterostructure lasers has been calculated. It is found that the Auger rate is much reduced in the quasi two-dimensional quantum-well lasers. This suggests that the temperature sensitivity of quantum-well InGaAsP lasers is much less than ordinary structures with much higher values of To at around room temperatures. A CONTINUI...

Bright tunable light emission in the short wavelength range from sulfur nanodots was demonstrated with a photoluminescence quantum yield (PLQY) of up to 59.4%. A fission-aggregation mechanism proposed for formation desired performances. This synthetic strategy allowed simultaneous size control 3.2 5.6 nm, thus tuning color ultraviolet (UV) deep blue (342–430 nm), and suppression unwanted nonrad...

Nonradiative recombination losses at defects in metal halide perovskite films are responsible for hindering the improvement of photovoltaic performance and stability solar cells (PSCs). Here, we report a feasible multifunctional additive strategy that uses cesium stearate to passivate simultaneously enhances tolerance light moisture stress. effectively suppressed target exhibit improved crystal...

Photoluminescence spectroscopy (PL) has been used to study the optical properties of three-dimensional quantum-sized InGaPAs islands formed by substituting phosphorus arsenic in an InGaP layer deposited on GaAs directly during epitaxial growth. PL line array is range 950–1000 nm at room temperature. Studies temperature 78–300 K indicate a significant inhomogeneity island array, presence nonradi...

Anion exchange reaction tunes the band gap of halide perovskites, which proceeds by migration ions through vacancies. This study reports preparation heterojunction perovskite microrods optically controlled localized vacancy filling, and leading to color tuning in MAPbBr3 microrod crystals. The is homogeneously suppressed treating crystal with a precursor solution, whereas locally inhibited at s...