Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/9829
Title: | Broadband optical absorption of amorphous carbon/Ag nanocomposite films and its potential for solar harvesting applications |
Authors: | 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 |
Keywords: | Amorphous carbon;Effective medium approximation;Nanocomposites;Plasmonics;Solar absorption |
Issue Date: | 24-Jul-2013 |
Source: | Solar Energy Materials and Solar Cells, 2013, vol. 117, pp. 350-356 |
Volume: | 117 |
Start page: | 350 |
End page: | 356 |
Journal: | Solar Energy Materials and Solar Cells |
Abstract: | 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 |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
CORE Recommender
Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.