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https://hdl.handle.net/20.500.14279/9829
Τίτλος: | Broadband optical absorption of amorphous carbon/Ag nanocomposite films and its potential for solar harvesting applications | Συγγραφείς: | Zoubos, H. Koutsokeras, Loukas E. Anagnostopoulos, Dimitrios F. Lidorikis, Elefterios Kalogirou, Soteris A. Wildes, Andrew R. Kelires, Pantelis C. Patsalas, Panos A. |
Major Field of Science: | Engineering and Technology | Field Category: | Environmental Engineering | Λέξεις-κλειδιά: | Amorphous carbon;Effective medium approximation;Nanocomposites;Plasmonics;Solar absorption | Ημερομηνία Έκδοσης: | 24-Ιου-2013 | Πηγή: | Solar Energy Materials and Solar Cells, 2013, vol. 117, pp. 350-356 | Volume: | 117 | Start page: | 350 | End page: | 356 | Περιοδικό: | Solar Energy Materials and Solar Cells | Περίληψη: | The emergence of Localized Surface Plasmon Resonance (LSPR) in nanocomposite films consisting of a hydrogen-free amorphous Carbon (a-C) matrix and Ag is considered theoretically and experimentally. While in theory it could be manifested for highly tetrahedral (>90% sp3) matrices, Auger electron spectroscopy and neutron reflectivity have shown that the incorporation of Ag into the a-C matrix induces severe graphitization that eliminates the LSPR; nonetheless, the dielectric damping of graphitized a-C, in combination with the π-π* electronic transitions of carbon and the defect states introduced by Ag, cumulatively result in a strong broadband optical absorption in the near infrared, visible and UVA/UVB spectral ranges, revealed by optical reflectivity spectra, that coincides with the solar emission spectrum. The incorporation of Ag into a-C at room temperature thus proves to be an energy-efficient pathway for the controlled graphitization and the tailored optical absorption of novel nanocomposite films for solar photothermal applications. | URI: | https://hdl.handle.net/20.500.14279/9829 | ISSN: | 09270248 | DOI: | 10.1016/j.solmat.2013.06.019 | Rights: | © Elsevier | Type: | Article | Affiliation: | University of Ioannina Cyprus University of Technology Institut Laue-Langevin Aristotle University of Thessaloniki |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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