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• W2614028346 abstract "Abstract Semiconductor nanostructures capable of emitting from two excited states and thereby of producing two photoluminescence colours are of fundamental and potential technological significance. In this limited class of nanocrystals, CdSe/CdS core/arm tetrapods exhibit the unusual trait of two-colour (red and green) multiexcitonic emission, with green emission from the CdS arms emerging only at high excitation fluences. Here we show that by synthetic shape-tuning, both this multi-colour emission process, and blinking and photobleaching behaviours of single tetrapods can be controlled. Specifically, we find that the properties of dual emission and single-nanostructure photostability depend on different structural parameters—arm length and arm diameter, respectively—but that both properties can be realized in the same nanostructure. Furthermore, based on results of correlated photoluminescence and transient absorption measurements, we conclude that hole-trap filling in the arms and partial state-filling in the core are necessary preconditions for the observation of multiexciton multi-colour emission." @default.
• W2614028346 created "2017-05-19" @default.
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• W2614028346 date "2017-05-12" @default.
• W2614028346 modified "2023-09-27" @default.
• W2614028346 title "Using shape to turn off blinking for two-colour multiexciton emission in CdSe/CdS tetrapods" @default.
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• W2614028346 doi "https://doi.org/10.1038/ncomms15083" @default.
• W2614028346 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5437295" @default.
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• W2614028346 hasPublicationYear "2017" @default.
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