Issue 2, 2012

Direct growth of few-layer graphene films on SiO2 substrates and their photovoltaic applications

Abstract

We first demonstrate the use of few layer graphene films directly grown on SiO2 substrates obtained by ambient pressure chemical vapor deposition (APCVD) as counter electrodes in dye-sensitized solar cells (DSSCs). The layer number and crystal size of graphene films can be tuned by changing growth temperature, growth time and gas flow ratio (CH4 : H2). The continuous graphene films exhibit extremely excellent electrical transport properties with a sheet resistance of down to 63.0 Ω sq−1 and extremely high mobility of up to 201.4 cm2 v−1 s−1. The highly conductive graphene films as counter electrodes of DSSCs achieve a photovoltaic efficiency of 4.25%, which is comparable to the DSSC efficiency (4.32%) based on FTO counter electrodes. Our work indicates the great potential of CVD graphene films directly grown on dielectric substrates for photovoltaic and electronic applications.

Graphical abstract: Direct growth of few-layer graphene films on SiO2 substrates and their photovoltaic applications

Supplementary files

Article information

Article type
Paper
Submitted
26 Sep 2011
Accepted
05 Oct 2011
First published
03 Nov 2011

J. Mater. Chem., 2012,22, 411-416

Direct growth of few-layer graphene films on SiO2 substrates and their photovoltaic applications

H. Bi, S. Sun, F. Huang, X. Xie and M. Jiang, J. Mater. Chem., 2012, 22, 411 DOI: 10.1039/C1JM14778A

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