• Corpus ID: 251928832

Purifying single photon emission from giant shell CdSe/CdS quantum dots at room temperature

@inproceedings{Morozov2021PurifyingSP,
  title={Purifying single photon emission from giant shell CdSe/CdS quantum dots at room temperature},
  author={Sergii Morozov and Stefano Vezzoli and Alina Myslovska and Alessio Di Giacomo and Niels Asger Mortensen and Iwan Moreels and Riccardo Sapienza},
  year={2021}
}
Giant shell CdSe/CdS quantum dots are bright and flexible emitters, with near-unity quantum yield and suppressed blinking, but their single photon purity is reduced by efficient multiexcitonic emission. We report the observation, at the single dot level, of a large blueshift of the photoluminescence biexciton spectrum (24 ± 5 nm over a sample of 32 dots) for pure-phase wurtzite quantum dots. By spectral filtering, we demonstrate a 2.3 times reduction of the biexciton quantum yield relative to the… 

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