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Incorporation of graphene into SnO2 photoanodes for dye-sensitized solar cells

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posted on 12.08.2016 by Munkhbayar Batmunkh, Mahnaz Dadkhah, C.J. Shearer, Mark Biggs, J.G. Shapter
© 2016 Elsevier B.V.In dye-sensitized solar cell (DSSC) photoanodes, tin dioxide (SnO2) structures present a promising alternative semiconducting oxide to the conventional titania (TiO2), but they suffer from poor photovoltaic (PV) efficiency caused by insufficient dye adsorption and low energy value of the conduction band. A hybrid structure consisting of SnO2 and reduced graphene oxide (SnO2-RGO) was synthesized via a microwave-assisted method and has been employed as a photoanode in DSSCs. Incorporation of RGO into the SnO2 photoanode enhanced the power conversion efficiency of DSSC device by 91.5%, as compared to the device assembled without RGO. This efficiency improvement can be attributed to increased dye loading, enhanced electron transfer and addition of suitable energy levels in the photoanode. Finally, the use of RGO addresses the major shortcoming of SnO2 when employed as a DSSC photoanode, namely poor dye adsorption and slow electron transfer rate.

Funding

This work was supported by the Australian Research Council Discovery Program (DP130101714).

History

School

  • Science

Department

  • Chemistry

Published in

Applied Surface Science

Volume

387

Pages

690 - 697

Citation

BATMUNKH, M. ...et al., 2016. Incorporation of graphene into SnO2 photoanodes for dye-sensitized solar cells. Applied Surface Science, 387, pp. 690-697.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2016

Notes

This paper was accepted for publication in the journal Applied Surface Science and the definitive published version is available at http://dx.doi.org/10.1016/j.apsusc.2016.06.146

ISSN

0169-4332

Language

en

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