Optically-Enhanced Polymer Bulk Heterojunction Solar Cells by Addition of Gold Nanostructures

Abstract:

We investigate the effects of Au nanoparticles (Au NPs) on poly [N-9′′-hepta-decanyl-2,14-carbazole-alt-5,5-(4′,14′-di-2-thienyl-2′,1,3′-benzothiadiazole)]:ph-enyl-C61-butyric acid methyl ester (PCDTBT:PCBM) based organic photovoltaic (OPV) devices by thermal evaporating Au NPs onto polytetrafluoroethylene (PTFE) layer which is based on indium-tin-oxide (ITO) glass substrate.Significant improvement in terms of short-circuit current density (Jsc) by 33.6%, fill factor (FF) by 0.9%, and thereby commensurate power conversion efficiency (PCE) by 40.7% were achieved compared to devices without Au NPs. The OPVs performance enhancement is attributed to the formation of Au NPs-induced surface plasmons that increases the rate of exciton generation, and the probability of exciton dissociation.

• Periodical: Advanced Materials Research (Volume 1094)
• Pages: 214-217
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1094.214
• Online since: March 2015
• Authors: Li Xin Zhang, Pan Pan Zhang, Da Ma, Yang Dang, Xin Chen, Chun Xia Zhang, Bo Nan Kang*
• Keywords: Au Nanoparticles, Polymer Solar Cell, Surface Plasmons

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