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TL;DR: Perovskite quantum wells yield highly efficient LEDs spanning the visible and near-infrared as discussed by the authors. But their performance is not as good as those of traditional LEDs, and their lifetime is shorter.

TL;DR: The formation of submicrometre-scale structure in perovskite light-emitting diodes can raise their external quantum efficiency beyond 20%, suggesting the possibility of both high efficiency and high brightness.

TL;DR: Stable and bright perovskite LEDs with high energy conversion efficiencies by optimizing formamidinium lead iodide films and the half-lifetime of device with benzylamine treatment is comparable to the lifetime of near-infrared organic LEDs.

TL;DR: Red PeLEDs based on three-dimensional (3D) mixed-halide perovskites where the defects are passivated by using 5-aminovaleric acid are demonstrated, which exhibit a half-life of up to 8 h under a high constant current density of 100 mA cm-2, which is over 10 times improvement compared to literature results.

TL;DR: In this paper, the intrinsic origin of the poor stability of perovskite solar cells was investigated using a confocal fluorescence microscope, and it was shown that the degradation starts from grain boundaries and gradually extends to the center of the grains.