Abstract
A highly dense and uniform layer of Au nanoparticles (NPs) on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) film has been produced by the pulsed laser deposition (PLD) technique toward the production of an improved efficiency photovoltaic device. The advantage of PLD over other techniques is the easy and precise control of the Au NPs size and spatial distribution, without needing of further NP surface functionalization. The efficiency enhancement factor related to Au NPs doping has been evaluated in a solar cell based on poly-(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) diffused bilayer. The short-circuit current density, J SC, increases by 18 % and the power conversion efficiency by 22 %, respectively, in comparison with an equivalent device without Au NPs. The optical and morphological properties of the Au NPs layer have been selected in order to evaluate the contribution of the surface plasmon resonance as enhancement factor of the solar cell efficiency, in a range size where light scattering is negligible.
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Acknowledgments
This work was supported by the Italian projects Rete Nazionale di Ricerca sulle Nanoscienze ItalNanoNet (FIRB reference number RBPR05JH2P), EFOR-Energia da FOnti Rinnovabili (Iniziativa CNR per il Mezzogiorno L. 191/2009 art. 2 comma 44), and by the European project ESCORT—Efficient Solar Cells based on Organic and hybrid Technology (7th FWP—reference number 261920).
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Resta, V., Caricato, A.P., Loiudice, A. et al. Pulsed laser deposition of a dense and uniform Au nanoparticles layer for surface plasmon enhanced efficiency hybrid solar cells. J Nanopart Res 15, 2017 (2013). https://doi.org/10.1007/s11051-013-2017-3
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DOI: https://doi.org/10.1007/s11051-013-2017-3