#perovskite-leds

#perovskite-leds

Metal halide perovskites have emerged as a material for LEDs owing to exceptional luminescent properties and cost-effective solution processability4,5,6,7,8,9,10. Quasi-2D PeLEDs have demonstrated superior device performance and reproducibility because of their quantum well structures9,11,12,13,14,15,16. However, quasi-2D perovskites are usually composed of hybrid and random 3D-2D phases and face two critical challenges: (1) abundant surface defects will lead to severe non-radiative recombination7,17,18,19 and (2) notable energy disorder will interrupt charge transport, hence reducing device efficiency20,21.