articleACS NanoMay 19, 2010Closed access

Solution-Processable Graphene Oxide as an Efficient Hole Transport Layer in Polymer Solar Cells

SLShao‐Sian LiKTKun-Hua TuCLChih-Cheng LinCCChun‐Wei ChenMCManish Chhowalla

National Taiwan University · Imperial College London · +1 more institution

PubMed
Indexed incrossrefpubmed

Abstract

The utilization of graphene oxide (GO) thin films as the hole transport and electron blocking layer in organic photovoltaics (OPVs) is demonstrated. The incorporation of GO deposited from neutral solutions between the photoactive poly(3-hexylthiophene) (P3HT):phenyl-C61-butyric acid methyl ester (PCBM) layer and the transparent and conducting indium tin oxide (ITO) leads to a decrease in recombination of electrons and holes and leakage currents. This results in a dramatic increase in the OPV efficiencies to values that are comparable to devices fabricated with PEDOT:PSS as the hole transport layer. Our results indicate that GO could be a simple solution-processable alternative to PEDOT:PSS as the effective…

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Topics & keywords

Topics
Keywords
  • Materials science
  • Graphene
  • PEDOT:PSS
  • Photoactive layer
  • Indium tin oxide
  • Optoelectronics
  • Organic solar cell
  • Oxide
UN Sustainable Development Goals
  • Affordable and clean energy
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