Influence of Photoanode Geometry on Current-Voltage Parameters of the DSSC
P. Kwaśnickia, b, J. Dziedzicb, M. Inglotc
aDepartment of Physical Chemistry and Physicochemical Basis of Environmental Engineering, Institute of Environmental Engineering in Stalowa Wola, John Paul II Catholic University of Lublin, E. Kwiatkowskiego 3A, 37-450 Stalowa Wola, Poland
bML System SA, Zaczernie 190G, 36-062 Zaczernie, Poland
cDepartment of Physics and Medical Engineering, Rzeszów University of Technology, al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
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In this work we focus on different geometry of the 3rd generation solar cell in order to verify the influence of the photoanode and electrode shape on the charge transfer between the absorber (dye) and the photoanode and electrode layer. Since dye-sensitized solar cells are still very popular in terms of photovoltaic application especially as being a low cost and transparent solar cell, understanding of the charge transfer mechanism may lead to significant improvement of the efficiency. Research conducted by many scientific communities around the world confirms that such cells have a big advantage over commonly used silicon cells. In addition, the use of a wide range of colours and opportunity to control a transparency creates the possibility of using DSSC as an element integrated with the facade of the building. By laser patterning one can easily change the geometry of the conductive layer such as FTO and modify the charge transfer path in the dye-sensitized solar cell. For this purpose laser ablation process using a semiconductor ytterbium laser (λ=1024 nm) was used. Finally, the current-voltage parameters of DSSC cells with variable geometry of the working electrode were determined using different methods.

DOI:10.12693/APhysPolA.135.1244
topics: photovoltaics, DSSC, laser ablation, Nyquist graphs