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Proceedings Paper

Efficient plasmonic nanostructures for thin film solar cells
Author(s): Valeria Marrocco; Marco Grande; Maria Antonietta Vincenti; Giovanna Calò; Vincenzo Petruzzelli; Antonella D'Orazio
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Paper Abstract

Recent scientific publications have highlighted the possibility of enhancing solar conversion efficiency in thin film solar cells using surface plasmon (SP) waves and resonances. One main strategy is to deposit layers of metal nanoparticles on the top of a thin film silicon solar cell which can increase light absorption and consequently the energy conversion in the frequency range where the silicon intrinsic absorptance is low. In this paper, we investigate the effects produced on the light absorption and scattering by silver nanoparticles, arranged in a periodic pattern, placed on the top of amorphous silicon (α-Si) thin layer. We propose different geometry of metal objects, quantifying the scattering (back and forward) determined by the nanoparticles in dependence of their shapes and Si thickness. The analysis reveals that the thickness of the substrate has huge influence on the scattering, in particular on the back one, when the nanoparticles have corners, whereas it seems less dramatic when rounded profiles are considered (nanospheres).

Paper Details

Date Published: 18 May 2010
PDF: 9 pages
Proc. SPIE 7725, Photonics for Solar Energy Systems III, 77250L (18 May 2010); doi: 10.1117/12.854495
Show Author Affiliations
Valeria Marrocco, Politecnico di Bari (Italy)
Marco Grande, Politecnico di Bari (Italy)
Maria Antonietta Vincenti, AEgis Technologies Group, Inc. (United States)
Giovanna Calò, Politecnico di Bari (Italy)
Vincenzo Petruzzelli, Politecnico di Bari (Italy)
Antonella D'Orazio, Politecnico di Bari (Italy)

Published in SPIE Proceedings Vol. 7725:
Photonics for Solar Energy Systems III
Ralf B. Wehrspohn; Andreas Gombert, Editor(s)

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