Aqueous acid-based synthesis of lead-free tin halide perovskites with near-unity photoluminescence quantum efficiency† †Electronic supplementary information (ESI) available: Experimental section and characterization details, an additional SEM image, additional PL decay curves, and additional picture

Aqueous acid-based synthesis of lead-free tin halide perovskites with near-unity photoluminescence quantum efficiency and high chemical yield is described.

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