Journal
PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS
Volume 9, Issue 2, Pages 184-189Publisher
ELSEVIER
DOI: 10.1016/j.photonics.2010.09.001
Keywords
Plasmonic organic photovoltaics; Metal nanoparticles; Current density; Power conversion efficiency
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The present paper aims at realizing high efficiency organic photovoltaic devices using plasmonic metallic nanostructures. In particular, Ag and Au nanoparticles, produced by ultrafast laser ablation in liquids, were embedded in the photoactive layer of polymer fullerene bulk heterojunction photovoltaic devices. It was shown that doping with plasmonic nanoparticles leads to a power conversion efficiency improvement that can reach 20%. This increase can be attributed to improved short-circuit current due to an enhanced absorption of the photoactive layer caused by localized surface plasmon resonances of the conduction electrons within the particles. This argument was supported by the combinatorial study of the optical properties of the nanoparticles and the photon-to-electron conversion efficiency of the polymer-fullerene-nanoparticle devices. (C) 2010 Elsevier B.V. All rights reserved.
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