Abstract
In article number 1705532, Hao-Wu Lin and co-workers spray-synthesize unprecedented cubic-shaped perovskite nanocrystals with a stable absolute photoluminescence quantum yield of ≈100% in both solution and the solid-state neat film. When utilized in color-conversion-type light-emission hybrid devices, the devices exhibit excellent external quantum efficiency of 28.1%, power efficiency of 121 lm W−1, and extraordinary forward-direction luminescence of 8 500 000 cd m−2 and successfully demonstrate high-definition motion pictures.
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