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19 August 2020 Time-resolved cathodoluminescence imaging of Mn2+ luminescence in Mn-doped CsPbCl3
Rebecca Wai, Namrata Ramesh, Clarice Aiello, Jonathan Raybin, Steven Zeltmann, Connor Bischak, Edward Barnard, Shaul Aloni, D. Frank Ogletree, Andrew Minor, Naomi Ginsberg
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Proceedings Volume 11464, Physical Chemistry of Semiconductor Materials and Interfaces XIX; 114641C (2020) https://doi.org/10.1117/12.2568257
Event: SPIE Nanoscience + Engineering, 2020, Online Only
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Abstract
Using time-resolved cathodoluminescence imaging, we measure the pixel-by-pixel cathodoluminescence decay of Mn2+ dopants in cesium lead chloride perovskite microplates. This measurement generates a spatially resolved map of the excited state decay dynamics of the Mn2+ dopants, which suggest an explanation for enhanced Mn2+ emission near the surface of the microplate. Near the surface, the contribution from the longer lifetime component increases, which implies that the population of excited Mn2+ is higher near the surface. This may arise due to the increased probability of carrier recombination at a Mn2+ dopant near the surface, possibly enabled by an increased concentration of traps.
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Rebecca Wai, Namrata Ramesh, Clarice Aiello, Jonathan Raybin, Steven Zeltmann, Connor Bischak, Edward Barnard, Shaul Aloni, D. Frank Ogletree, Andrew Minor, and Naomi Ginsberg "Time-resolved cathodoluminescence imaging of Mn2+ luminescence in Mn-doped CsPbCl3", Proc. SPIE 11464, Physical Chemistry of Semiconductor Materials and Interfaces XIX, 114641C (19 August 2020); https://doi.org/10.1117/12.2568257
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KEYWORDS
Luminescence
Perovskite
Doping
Lead
Cesium
Nanocrystals
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