Reduction of the fluorescence lifetime of quantum dots in presence of plasmonic nanostructures
| Autor: | D. Borrero Landazabal, R. Salas Montiel, A. A. Meza Olivo, K. Garay Palmett |
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| Přispěvatelé: | Universidad Industrial de Santander [Bucaramanga] (UIS), Centro de Investigacion Cientifica y de Education Superior de Ensenada [Mexico] (CICESE), Lumière, nanomatériaux et nanotechnologies (L2n), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
History business.industry Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences Fluorescence Computer Science Applications Education Reduction (complexity) [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Quantum dot 0103 physical sciences [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Optoelectronics 010306 general physics 0210 nano-technology Plasmonic nanostructures business |
| Zdroj: | Journal of Physics: Conference Series Journal of Physics: Conference Series, IOP Publishing, 2019, 1159, pp.012004. ⟨10.1088/1742-6596/1159/1/012004⟩ Journal of Physics: Conference Series, 2019, 1159, pp.012004. ⟨10.1088/1742-6596/1159/1/012004⟩ |
| ISSN: | 1742-6588 1742-6596 |
| DOI: | 10.1088/1742-6596/1159/1/012004⟩ |
| Popis: | International audience; Developing a single photon source in the near infrared spectrum for optical fibre communications implies the control of the spontaneous emission of quantum dots. In this paper we show that the fluorescence lifetime of lead sulphide quantum dots can be drastically decreased due to the presence of plasmonic nanostructures specially designed to confine the electromagnetic field to which the emitted photons could decay at λ = 1550nm. To demonstrate this, we first measured the fluorescence lifetime of colloidal quantum dots in toluene solution and took this as a reference measurement. Then, we compared this value with the fluorescence lifetime of quantum dots in two different plasmonic nanostructures. The measurement of lifetime was made using the Time-Correlated Single Photon Counting technique. We obtained for the quantum dots in solution a fluorescence lifetime of 0.98084μs and for the quantum dots in the nanostructures, fluorescence lifetimes of 0.06227μs and 0.11789μs. We also numerically calculated the distribution of the electromagnetic field near the plasmonic nanostructures. These results demonstrate that the plasmonic nanostructures modified the fluorescence lifetime of the quantum dots, and that these plasmonic nanostructures with the lead sulphide quantum dots could work as a single photon source that could be integrated in a photonic circuit for infrared optical fibre communications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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