Abstract Quasi-two-dimensional (quasi-2D) perovskites have attracted extraordinary
attention due to their superior semiconducting properties and have emerged as one of the …

As the requirements and expectation for displays in society are growing, higher standards of
the display technology are proposed, including wider color gamut, higher color purity, and …

Metal halide perovskites have received much attention for their application in light-emitting
diodes (LEDs) in the past several years. Rapid progress has been made in efficient green …

Currently, the blue perovskite light-emitting diodes (PeLEDs) suffer from a compromise in
lead toxicity and poor operation stability, and most previous studies have struggled to meet …

Metal halide perovskites (MHPs) have numerous advantages as light emitters such as high
photoluminescence quantum efficiency with a direct bandgap, very narrow emission …

Summary Two-dimensional (2D) perovskites with excellent stability and optoelectronic
properties have aroused great interest for use in perovskite solar cells (PSCs). To date, the …

Ruddlesden–Popper phase inorganic metal halide perovskites are promising candidates for
efficient light-emitting diodes (LEDs) with high brightness and color purity. Here, we …

Efficiency roll-off is a major issue for most types of light-emitting diodes (LEDs), and its
origins remain controversial. Here we present investigations of the efficiency roll-off in …