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Thickness dependence of device parameters in solid state dye sensitized solar cells

Authors:

Jayasundera Bandara ,

Institute of Fundamental Studies, Hantana Road, Kandy., LK
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Mukundan Thelakkat

Applied Functional Polymers, Department of Macromolecular Chemistry I, University of Bayreuth, Universitat Strasse 30, 95444 Bayreuth, Germany., DE
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Abstract

A solid-state dye-sensitized solar cell (SDSC) was fabricated with a very thin (~ 650 nm) mesoporous TiO2 electrode and a donor-antenna (D-A) dye by using 2,2',7,7'- tetrakis - (N,N-di-p-methoxyphenyl-amine) 9,9'- spirobifluorene (Spiro OMeTAD) as hole conductor. A highly transparent thin electrode sensitized with D-A dye showed a short circuit current (Isc) of 4.10mA/cm2, an open circuit voltage (Voc) of 782 mV and an efficiency of 1.79 % at an illumination intensity of 100 mW/cm2 (1 sun, AM 1.5G). TiCl4 treatment of mesoporous TiO2 layer resulted in Isc of 6.18 mA/cm2, Voc of 737 mV and an efficiency of 2.12% at the same illumination intensity. This investigation demonstrates the possibility of fabrication of SDSC by way of using a very thin and transparent TiO2 electrode together with a high molar extinction coefficient D-A dye, and the effect of TiO2 layer thickness on solid-state solar cell performances is discussed.


Keywords: Donor - antenna dye, sensitization, solid-state dyesensitized solar cell, TiO2, transparent electrode.

Doi: 10.4038/jnsfsr.v39i1.2921

J.Natn.Sci.Foundation Sri Lanka 2011 39 (1): 35-42

How to Cite: Bandara, J. and Thelakkat, M., 2011. Thickness dependence of device parameters in solid state dye sensitized solar cells. Journal of the National Science Foundation of Sri Lanka, 39(1), pp.35–42. DOI: http://doi.org/10.4038/jnsfsr.v39i1.2921
Published on 23 Mar 2011.
Peer Reviewed

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