articleNano LettersDec 16, 2013Closed access

Low-Temperature Processed Electron Collection Layers of Graphene/TiO 2 Nanocomposites in Thin Film Perovskite Solar Cells

JTJacob Tse‐Wei WangJMJames M. BallEMEva M. BareaAAAntonio AbateJAJack Alexander-Webber

University of Oxford · Universitat Jaume I

PubMed
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Abstract

The highest efficiencies in solution-processable perovskite-based solar cells have been achieved using an electron collection layer that requires sintering at 500 °C. This is unfavorable for low-cost production, applications on plastic substrates, and multijunction device architectures. Here we report a low-cost, solution-based deposition procedure utilizing nanocomposites of graphene and TiO2 nanoparticles as the electron collection layers in meso-superstructured perovskite solar cells. The graphene nanoflakes provide superior charge-collection in the nanocomposites, enabling the entire device to be fabricated at temperatures no higher than 150 °C. These solar cells show remarkable photovoltaic performance…

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Topics & keywords

Topics
Keywords
  • Graphene
  • Materials science
  • Nanocomposite
  • Perovskite (structure)
  • Energy conversion efficiency
  • Photovoltaic system
  • Oxide
  • Nanotechnology
UN Sustainable Development Goals
  • Affordable and clean energy
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