Enhanced downconversion of UV light by resonant scattering of aluminum nanoparticles
| Autor: | Iacopo Malfanti, Diederik S. Wiersma, Matteo Burresi, Roberto Fusco, Rajeshkumar Mupparapu, Silvia Vignolini, Kevin Vynck, Petra F. Scudo |
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| Rok vydání: | 2012 |
| Předmět: |
Range (particle radiation)
Materials science Scattering business.industry Ultraviolet Rays PLASMONIC ENHANCEMENT Nanoparticle Metal Nanoparticles Optical field Atomic and Molecular Physics and Optics Light scattering Nanomaterials Optics Spectrometry Fluorescence Scattering Radiation FLUORESCENCE business Plasmon Visible spectrum Aluminum |
| Zdroj: | Optics letters 37 (2012): 368–370. doi:10.1364/OL.37.000368 info:cnr-pdr/source/autori:Mupparapu Rajeshkumar [ 1 ] ; Vynck Kevin [ 1 ] ; Malfanti Iacopo [ 1 ] ; Vignolini Silvia [ 1,2 ] ; Burresi Matteo [ 1,3 ] ; Scudo Petra [ 4 ] ; Fusco Roberto [ 4 ] ; Wiersma Diederik S. [ 1,3 ]/titolo:Enhanced downconversion of UV light by resonant scattering of aluminum nanoparticles/doi:10.1364%2FOL.37.000368/rivista:Optics letters/anno:2012/pagina_da:368/pagina_a:370/intervallo_pagine:368–370/volume:37 |
| ISSN: | 1539-4794 |
| DOI: | 10.1364/OL.37.000368 |
| Popis: | Metallic nanoparticles are known to enhance nonlinear optical processes due to a local enhancement of the optical field. This strategy has been proposed to enhance downconversion in thin film solar cells, but has various disadvantages, among which is the fact that the enhancement occurs only in a tiny volume close to the particles. We report on a very different physical mechanism that can lead to significant downconversion enhancement, namely, that of resonant light scattering, and which is a large volume effect. We show that only a tiny amount of resonantly scattering metallic (aluminum) nanoparticles is enough to create a significant enhancement of the fluorescence of dye molecules in the visible wavelength range. The strategy can be applied in general to increase the emission of UV-absorbing constituents, and is of particular use for solar energy. (C) 2012 Optical Society of America |
| Databáze: | OpenAIRE |
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