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Unraveling Dynamic Trap-State Modulation in Single Core-Crown CdSe/CdS Nanoplatelets.

PubMed
Authors: Baillard G, Wagnon B, Daney de Marcillac W, Abécassis B, Mahler B, Coolen L

Year

2026

Paper ID

69280

Status

Peer-reviewed

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

Core-crown CdSe/CdS nanoplatelets combine improved quantum yield with promising optoelectronic performance, yet their emission dynamics remain governed by reversible charge trapping. By correlating single-particle luminescence decays with intensity fluctuations (blinking/flickering), we uncover a distinct emission regime at intermediate brightness levels where delayed luminescence arises. This behavior reflects a reversible trapping process that reduces light emission and introduces a secondary, slow decay channel. Time-resolved analysis reveals stochastic switching between active and inactive reversible trapping within an individual emitter. Under higher excitation powers, these reversible traps are supplanted by stronger nonradiative quenching pathways.

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  • Core-crown CdSe/CdS nanoplatelets combine improved quantum yield with promising optoelectronic performance, yet their emission dynamics remain governed by reversible charge...

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References & Citation Signals

[1] DOI https://doi.org/10.1021/acs.nanolett.6c01793 [2] Publisher https://pubmed.ncbi.nlm.nih.gov/42288983/

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