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Issue 12, 2020
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Memories in the photoluminescence intermittency of single cesium lead bromide nanocrystals

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Abstract

Single cesium lead bromide (CsPbBr3) nanocrystals show strong photoluminescence intermittency, with on- and off- dwelling times following power-law distributions. We investigate the correlations for successive on-times and successive off-times, and find a memory effect in the photoluminescence intermittency of such inorganic perovskite nanocrystals. This memory effect is not sensitive to the nature of the surface capping ligand and the embedding polymer. These observations suggest that photoluminescence intermittency and its memory are mainly controlled by intrinsic traps in the nanocrystals. Our findings will help optimizing light-emitting devices based on these perovskite nanocrystals.

Graphical abstract: Memories in the photoluminescence intermittency of single cesium lead bromide nanocrystals

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Supplementary files

Article information


Submitted
22 Jan 2020
Accepted
10 Mar 2020
First published
10 Mar 2020

Nanoscale, 2020,12, 6795-6802
Article type
Paper

Memories in the photoluminescence intermittency of single cesium lead bromide nanocrystals

L. Hou, C. Zhao, X. Yuan, J. Zhao, F. Krieg, P. Tamarat, M. V. Kovalenko, C. Guo and B. Lounis, Nanoscale, 2020, 12, 6795
DOI: 10.1039/D0NR00633E

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