Plasmonic nanocavity arrays for enhanced efficiency in organic photovoltaic cells

Nathan C. Lindquist; Wade A. Luhman; Sang Hyun Oh; Russell J. Holmes

doi:10.1063/1.2988287

Plasmonic nanocavity arrays for enhanced efficiency in organic photovoltaic cells

Nathan C. Lindquist, Wade A. Luhman, Sang Hyun Oh, Russell J. Holmes

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Abstract

We demonstrate enhanced power conversion efficiency in organic photovoltaic (OPV) cells incorporated into a plasmonic nanocavity array. The nanocavity array is formed between a patterned Ag anode and an unpatterned Al cathode. This structure leads to the confinement of optical energy and enhanced absorption in the OPV. Devices characterized under simulated solar illumination show a 3.2-fold increase in power conversion efficiency compared to OPVs with unpatterned Ag anodes. The observed enhancement is also reflected in the external quantum efficiency, and the spectral response is consistent with optical finite-difference time-domain simulations of the structure.

Original language	English (US)
Article number	123308
Journal	Applied Physics Letters
Volume	93
Issue number	12
DOIs	https://doi.org/10.1063/1.2988287
State	Published - 2008

Bibliographical note

Funding Information:
N.C.L. and W.A.L. contributed equally to this work. R.J.H. acknowledges support in part by the NSF MRSEC Program under Award No DMR-0212302. S.-H.O. acknowledges support in part by the 3M Non-Tenured Faculty Award.

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abstract = "We demonstrate enhanced power conversion efficiency in organic photovoltaic (OPV) cells incorporated into a plasmonic nanocavity array. The nanocavity array is formed between a patterned Ag anode and an unpatterned Al cathode. This structure leads to the confinement of optical energy and enhanced absorption in the OPV. Devices characterized under simulated solar illumination show a 3.2-fold increase in power conversion efficiency compared to OPVs with unpatterned Ag anodes. The observed enhancement is also reflected in the external quantum efficiency, and the spectral response is consistent with optical finite-difference time-domain simulations of the structure.",

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N2 - We demonstrate enhanced power conversion efficiency in organic photovoltaic (OPV) cells incorporated into a plasmonic nanocavity array. The nanocavity array is formed between a patterned Ag anode and an unpatterned Al cathode. This structure leads to the confinement of optical energy and enhanced absorption in the OPV. Devices characterized under simulated solar illumination show a 3.2-fold increase in power conversion efficiency compared to OPVs with unpatterned Ag anodes. The observed enhancement is also reflected in the external quantum efficiency, and the spectral response is consistent with optical finite-difference time-domain simulations of the structure.

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Plasmonic nanocavity arrays for enhanced efficiency in organic photovoltaic cells

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