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Perovskite materials and their optoelectronic devices have attracted intensive attentions in recent years. However, it is difficult to further improve the performance of perovskite devices due to the poor stability and the intrinsic deep level trap states (DLTS), which are caused by surface dangling bonds and grain boundaries. Herein, the CH3NH3PbBr3 perovskite microcrystal is encapsulated by a dense...
A self‐sufficient micrometer‐level vacuum growth chamber based on encapsulated MAPbBr3 microcrystals is designed by Rui Chen, Zhipeng Wei, and co‐workers, as described in article number 2100466. Perovskite materials with enhanced environmental, thermal, and optical stability through the reduction of deep‐level trap states due to self‐structural healing are observed. This greatly improves the lasing...
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