Cooperative Plasmonic
Effect of Ag and Au Nanoparticles
on Enhancing Performance of Polymer Solar Cells
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Abstract
This article describes a cooperative plasmonic effect
on improving
the performance of polymer bulk heterojunction solar cells. When mixed
Ag and Au nanoparticles are incorporated into the anode buffer layer,
dual nanoparticles show superior behavior on enhancing light absorption
in comparison with single nanoparticles, which led to the realization
of a polymer solar cell with a power conversion efficiency of 8.67%,
accounting for a 20% enhancement. The cooperative plasmonic effect
aroused from dual resonance enhancement of two different nanoparticles.
The idea was further unraveled by comparing Au nanorods with Au nanoparticles
for solar cell application. Detailed studies shed light into the influence
of plasmonic nanostructures on exciton generation, dissociation, and
charge recombination and transport inside thin film devices