Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 20, Issue 27, Pages 18176-18183Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cp02574f
Keywords
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Funding
- H2020 FET project COPAC [766563]
- ERC Starting Grant QUENTRHEL [278560]
- MIUR PRIN [2015XBZ5YA]
- European Research Council (ERC) [278560] Funding Source: European Research Council (ERC)
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Although the harnessing of multiple and hot excitons is a prerequisite for many of the groundbreaking applications of semiconductor quantum dots (QDs), the characterization of their dynamics through conventional spectroscopic techniques is cumbersome. Here, we show how a careful analysis of 2DES maps acquired in different configurations (BOXCARS and pump-probe geometry) allows the tracking and visualization of intraband Auger relaxation mechanisms, driving the hot carrier cooling, and interband bi- and tri-exciton recombination dynamics. The results obtained on archetypal core-shell CdSe/ZnS QDs suggest that, given the global analysis of the resulting datasets, 2D electronic spectroscopy techniques can successfully and efficiently dispel the intertwined dynamics of fast and ultrafast recombination processes in nanomaterials. Hence, we propose this analysis scheme to be used in future research on novel quantum confined systems.
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