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Lasing in hybrid organic–inorganic metal halide perovskite nanowires. a) Illustration of an optically pumped perovskite nanowire on a Si substrate with 300‐nm‐thick SiO2. b) Optical image of a 13.6‐μm‐long CH3NH3PbBr3 nanowire showing lasing emission. c) Lasing spectra of various alloy compositions of mixed lead halide perovskite nanowires demonstrating widely tunable laser emission at room temperature. a–c) Reproduced with permission.11 Copyright 2015, Nature Publishing Group.
