Unlock lasing in two-dimensional metal halide perovskites by tuning ns2 lone pairs
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Despite the proliferation of lasing reports in three-dimensional (3D) lead halide perovskites, robust lasing in their single-layer two-dimensional (2D) counterparts, (LA)2PbX4 (LA = spacer cation; X = halide), has remained elusive. Here, we uncover the critica... ...
