Narrow-Line Width Emission and Room Temperature Amplified Spontaneous Emission in Three-Dimensional Ge Halide Perovskites
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We report the structural and optoelectronic properties of lead-free CsGeI3 and CsGeBr3 perovskites, unveiling the critical role of local symmetry distortions in defining their emission properties. CsGeBr3 exhibits broad photoluminescence from self-trapped exci... ...
