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Although metal halide perovskite (MHP) light‐emitting diodes (LEDs) have demonstrated great potential in terms of electroluminescence efficiency, the operational stability of MHP LEDs currently remains the biggest bottleneck toward their practical usage. Well‐confined excitons/charge carriers in a dielectric/quantum well based on conventional spatial or potential confinement approaches substantially...
In article number 1905674, Tae‐Hee Han, Yang Yang, and co‐workers suggest an effective solution to mitigate the drawbacks of metal halide perovskites (MHPs) using strategically designed surface‐2D/bulk‐3D heterophased core–shell‐like MHP nanograins for long‐term‐stable light‐emitting diodes.
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