Perovskite crystal engineering enables LED breakthrough: 24.2% peak external quantum efficiency, 24,600 cd m-2 maximum luminance

https://www.eurekalert.org/news-releases/1083456

"tunable emission across visible spectrum, low-temperature, solution-based processability, narrowband vivid color output, overcoming trade-off between efficiency/ brightness... 3D mixed-halide perovskites like CsPbI3-xBrx external quantum efficiency plummets under high current densities due to hole leakage into the electron transport layer, overcome using p-Toluenesulfonyl-L-arginine strongly bonding to perovskite lattice via multiple functional groups for seamless carrier transfer between heterostructure's phases"

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