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- W3010805808 abstract "Mn2+ doping of lead halide perovskites has garnered recent interest because it produces stable orange luminescence in tandem with perovskite emission. Here, we observe enhanced Mn2+ luminescence at the edges of Mn2+-doped CsPbCl3 perovskite microplates and suggest an explanation for its origin using the high spatiotemporal resolution of time-resolved cathodoluminescence (TRCL) imaging. We reveal two luminescent decay components that we attribute to two different Mn2+ populations. While each component appears to be present both near the surface and in the bulk, the origin of the intensity variation stems from a higher proportion of the longer lifetime component near the perovskite surface. We suggest that this higher emission is caused by an increased probability of electron-hole recombination on Mn2+ near the perovskite surface due to an increased trap concentration there. This observation suggests that such surface features have yet untapped potential to enhance emissive properties via control of surface-to-volume ratio." @default.
- W3010805808 created "2020-03-23" @default.
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- W3010805808 date "2020-03-19" @default.
- W3010805808 modified "2023-10-15" @default.
- W3010805808 title "Resolving Enhanced Mn<sup>2+</sup> Luminescence near the Surface of CsPbCl<sub>3</sub> with Time-Resolved Cathodoluminescence Imaging" @default.
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- W3010805808 doi "https://doi.org/10.1021/acs.jpclett.0c00574" @default.
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