[ 56 , 57 ] The AFM and SEM images of all these films (Figures S9,S10 , Supporting Information) revealed an increasing trend in roughness with higher iodide ratios, leading to enlarged grain boundaries and potential improvement in light outcoupling [ 58 ] in devices.
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Efficient Spin-Light-Emitting Diodes With Tunable Red to Near-Infrared Emission at Room Temperature.
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