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Journal of Nanomaterials
Volume 2014, Article ID 736879, 12 pages
http://dx.doi.org/10.1155/2014/736879
Research Article

Gold Nanoparticle-Graphene Oxide Nanocomposites That Enhance the Device Performance of Polymer Solar Cells

1Department of Photonics and Institute of Display, National Chiao Tung University, Hsinchu 30010, Taiwan
2Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan

Received 25 June 2014; Revised 5 September 2014; Accepted 11 September 2014; Published 14 October 2014

Academic Editor: K. R. Justin Thomas

Copyright © 2014 Ming-Kai Chuang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Metal nanoparticle-decorated graphene oxides are promising materials for use in various optoelectronic applications because of their unique plasmonic properties. In this paper, a simple, environmentally friendly method for the synthesis of gold nanoparticle-decorated graphene oxide that can be used to improve the efficiency of organic photovoltaic devices (OPVs) is reported. Here, the amino acid glycine is employed as an environmentally friendly reducing reagent for the reduction of gold ions in the graphene oxide solutions. Transmission electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, UV-Vis spectroscopy, and Raman spectroscopy are used to characterize the material properties of the resulting nanomaterials. Furthermore, these nanocomposites are employed as the anode buffer layer in OPVs to trigger surface plasmonic resonance, which improved the efficiency of the OPVs. The results indicate that such nanomaterials appear to have great potential for application in OPVs.