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Impedance spectroscopy study of solid-state dye-sensitized solar cells with varying Spiro-OMeTAD concentration

Published online by Cambridge University Press:  31 January 2011

Márcio S Góes ,
Francisco Fabregat-Santiago ,
Paulo R Bueno  and
Juan Bisquert
Márcio S Góes
Affiliation:
[email protected], Universidade Estadual Paulista, Araraquara, Brazil
Francisco Fabregat-Santiago
Affiliation:
[email protected], Universitat Jaume I, Castelló, Spain
Paulo R Bueno
Affiliation:
[email protected], Universidade Estadual Paulista, Araraquara, Brazil
Juan Bisquert
Affiliation:
[email protected]
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Abstract

This work reports on the changes of solid-state cells dye-sensitized solar cells performance with the variation of concentration of spiro-OMeTAD between 5% and 25% in the fabrication of the cell. The changes in charge recombination and capacitance correlate with the improvement of current-potential characteristics a increasing spiro-OMeTAD content, which is explained by reduction of transport resistance for hole transport, the increase of charge separation in the dye molecules, and importantly, with the increase of the β-factor in the recombination resistance, that causes a reduction of the diode ideality factor.

Keywords

energy generationnanoscalephotovoltaic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1211: Symposium R – Advanced Nanostructured Solar Cells , 2009 , 1211-R06-03
Copyright
Copyright © Materials Research Society 2010

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References

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