Strong plasmonic enhancement of biexciton emission: controlled coupling of a single quantum dot to a gold nanocone antenna
| Autor: | Matthew R. Buck, Simon Vassant, Jennifer A. Hollingsworth, Stephan Götzinger, Korenobu Matsuzaki, Hsuan-Wei Liu, Silke Christiansen, Anke Dutschke, Björn Hoffmann, Xue-Wen Chen, Vahid Sandoghdar |
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| Přispěvatelé: | Max Planck Institute for the Science of Light, Max-Planck-Gesellschaft, Carl Zeiss Microscopy GmbH, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH (Helmholtz-Zentrum Berlin), Helmholtz-Zentrum Berlin, Materials Physics and Applications Division, Los Alamos National Laboratory (LANL), European Project: 268078,EC:FP7:ERC,ERC-2010-AdG_20100224,SINGLEION(2011) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Photon
optoelectronics FOS: Physical sciences 02 engineering and technology nano-optics 01 natural sciences semiconductor quantum dots Article 0103 physical sciences Radiative transfer LEDs and light sources 010306 general physics Single photons and quantum effects Quantum Biexciton Plasmon Physics Methods and concepts for material development [PHYS]Physics [physics] Nanophotonics and plasmonics Multidisciplinary business.industry Lasers Multiexcitonic transitions and emission 021001 nanoscience & nanotechnology 3. Good health Quantum dot Optoelectronics Quantum efficiency 0210 nano-technology business Excitation Physics - Optics Optics (physics.optics) |
| Zdroj: | Scientific Reports Scientific Reports, 2017, 7, pp.42307. ⟨10.1038/srep42307⟩ |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep42307⟩ |
| Popis: | 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 non-radiative 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. Comment: 31 pages, 6 figures, 1 table |
| Databáze: | OpenAIRE |
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