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arXiv · 1502.01740

Effect of charging on CdSe/CdS dot-in-rods single-photon emission

M. Manceau·S.·Vezzoli·Q. Glorieux·F. Pisanello·E. Giacobino·L. Carbone·M. De Vittorio·A. Bramati
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Abstract

The photon statistics of CdSe/CdS dot-in-rods nanocrystals is studied with a method involving post-selection of the photon detection events based on the photoluminescence count rate. We show that flickering between two states needs to be taken into account to interpret the single-photon emission properties. With post-selection we are able to identify two emitting states: the exciton and the charged exciton (trion), characterized by different lifetimes and different second order correlation functions. Measurements of the second order autocorrelation function at zero delay with post- selection shows a degradation of the single photon emission for CdSe/CdS dot-in-rods in a charged state that we explain by deriving the neutral and charged biexciton quantum yields.

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M. Manceau, S., Vezzoli, Q. Glorieux, F. Pisanello, E. Giacobino, L. Carbone, M. De Vittorio, A. Bramati. 2015-02-05. Effect of charging on CdSe/CdS dot-in-rods single-photon emission. https://doi.org/10.1103/physrevb.90.035311

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