Additional peak appearing in the one-photon luminescence of single gold nanorods

Froehlich, Toni and Schoenenberger, Christian and Calame, Michel. (2016) Additional peak appearing in the one-photon luminescence of single gold nanorods. Optics Letters, 41 (7). pp. 1325-1328.

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We used a confocal laser microscope to investigate the one-photon photoluminescence (PL) of gold antennas. The PL spectra can be precisely fitted to a plasmon - enhanced PL model. For increasing the antenna length, the energy peak position decreases continuously until it reaches a value of 1.7 - 1.8 eV. For longer antennas and smaller plasmon energies, we observe an additional, persistent shoulder in the PL spectra, which we explain by a Gaussian - shaped peak at Delta(X) approximate to 1.78 - 1.79 eV. We attribute this behavior to the opening of an additional decay path for electrons at the gold interband transition edge, which we observe only for long antennas. (C) 2016 Optical Society of America
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Experimentalphysik Nanoelektronik (Schönenberger)
UniBasel Contributors:Schönenberger, Christian and Fröhlich, Martin Toni and Calame, Michel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Optical Society of America
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:15 Feb 2017 09:33
Deposited On:15 Feb 2017 09:33

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