Characterisation of graphene-based layers for dye-sensitised solar cells application

Abstract

The influence of the graphene-based counter electrode on the structure, optical properties and electrocatalytic activity of dye-sensitised solar cells (DSCC) was analysed. The graphene and reduced graphene oxide were deposited by CVD and spin-coating method on the FTO glass substrate, respectively. HRTEM investigation confirms the crystallographic structure of graphene. The investigated layers show flat transmittance spectra across the visible and near-infrared region. The charge transfer resistance of the graphene-based film was analysed by electrochemical impedance measurement. The obtained results show the possibility of replacing expensive platinum in DSCC by using graphene-based counter electrode.

Keywords:

• Graphene layer
• Graphene oxide layer
• Dye-sensitised solar cells
• High-resolution electron microscopy

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Corrigendum

Acknowledgements

The project was funded by the National Science Centre on the basis of the contract No. DEC-2013/09/B/ST8/02943.