Matsuzaki K, Vassant S, Liu HW, Dutschke A, Hoffmann B, Chen X, Christiansen S, Buck MR, Hollingsworth JA, Götzinger S, Sandoghdar V (2017)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2017
Publisher: Nature Publishing Group
Book Volume: 7
Article Number: 42307
DOI: 10.1038/srep42307
Multiexcitonic transitions and emission of several photons per excitation comprise a very attractive feature of semiconductor quantum dots for optoelectronics applications. However, these higher-order radiative processes are usually quenched in colloidal quantum dots by Auger and other nonradiative decay channels. To increase the multiexcitonic quantum efficiency, several groups have explored plasmonic enhancement, so far with moderate results. By controlled positioning of individual quantum dots in the near field of gold nanocone antennas, we enhance the radiative decay rates of monoexcitons and biexcitons by 109 and 100 folds at quantum efficiencies of 60 and 70%, respectively, in very good agreement with the outcome of numerical calculations. We discuss the implications of our work for future fundamental and applied research in nano-optics.
APA:
Matsuzaki, K., Vassant, S., Liu, H.-W., Dutschke, A., Hoffmann, B., Chen, X.,... Sandoghdar, V. (2017). Strong plasmonic enhancement of biexciton emission: Controlled coupling of a single quantum dot to a gold nanocone antenna. Scientific Reports, 7. https://doi.org/10.1038/srep42307
MLA:
Matsuzaki, Korenobu, et al. "Strong plasmonic enhancement of biexciton emission: Controlled coupling of a single quantum dot to a gold nanocone antenna." Scientific Reports 7 (2017).
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