![]() Our findings constitute a reliable approach to managing the efficiency of multiexciton emission over a wide span of distances, thus paving the way for new applications. Under weak pulsed excitation, the number of photons emitted by the quantum dot per pulse is close to one. We attribute this effect to efficient coupling, which results in the trade-off between resonance energy transfer from QD to gold nanorods and the Purcell effect at small QD−PNP separations and the predominant influence of the Purcell effect at longer distances. Under weak continuous excitation, where the single dot luminescence is due primarily to single exciton recombinations, antibunching is observed in the single dot emission correlation. Remarkably, the enhancement of BX emission remains pronounced even at distances of 170 nm. (a) Absorption spectrum of the CdSe cores used as seeds for the CdS/ZnS shell growth. Arruda,1,2, Romain Bachelard,3 John Weiner,2 Sebastian Slama,4 and Philippe W. (CdSe)ZnS Core-Shell Quantum Dots - Synthesis and Characterization of a. Controlling photon bunching and antibunching of two quantum emitters near a core-shell sphere Tiago J. Studying the same single QD before and after its integration with the PNPs, we observed a plasmon-mediated increase in the QY of BX emission. Figure S1 Characterization of quantum dot sample. The second-order correlation function of the diode displays anti-bunching under. Here, we demonstrate the PNPs induced distance-controlled enhancement of BX emission of single QDs. Plasmonic nanoparticles (PNPs) provide an attractive opportunity to accelerate BX radiative recombination. However, the quantum yield (QY) of BX emission is low due to the fast Auger process. Antibunching is a characteristic of light with sub-Poissonian statistics. Semiconductor quantum dots (QDs) are known for their ability to exhibit multiphoton emission caused by recombination of biexcitons (BX).
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