Fast dye sensitization procedure for dye sensitized solar cells

Alberto Fattori^a, Maria Francesca Ottaviani^a, Mahmut Kus^b

^aDepartment of Earth Science Life and Environment (DiSTeVa) Urbino University, via Cà le Suore 2, Urbino, 61029, Italy

^bNanophotonics and Interface Research Laboratory Advanced Technology Research and Application Center Selcuk University, Alaeddin Keykubat Yerleşkesi, 42250 Selçuklu/Konya (Turkey), Turkey

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Poster, Alberto Fattori, 003
Publication date: 5th February 2015

A dye cell is made by different materials such as conductive glass, an electrolyte solution, a layer of titanium dioxide and a dye. The dye, at the core of these devices, is responsible for the light-to-electricity conversion which occurs after the light absorption. Studies on DSC are usually carried out for the improvement of the performance of the device, focusing on the singular components or focusing at their interfaces. Nevertheless, researchers are also interested in applied studies for industrial purposes in order to bring this technology to the market realizing the promise of a DSC as low cost and scalable PV technology. Dye sensitization time control is among those topics. In a laboratory scale the usual dye sensitization is between 8-20 hours depending on the film thickness and the particle size where the adsorption is due to be optimal. In literature there are few works related to this topic referred mainly to pumping dye solution through DSC¹ or rapid dipping of TiO₂ films in dye solution.²This study has the aim of the optimization of a new method for a fast sensitization based on a dye dripping solution in specific experimental conditions. The results so far obtained reported that in two minutes time, cell efficiencies are almost the same when compared with standard adsorption method. We tested different dyes, the ruthenium based (N719, N3) and indoline (D149) and we used different settings changing time, concentrations and adsorbtion conditions. More studies are required in order to optimize the best adsorption condition for each dye employed.

1) Davies, P. M. L.; Watson, T. M.; Holliman , P. J.; Connell, A.; Worsley D. A. Ultra-fast dye sensitisation and co-sensitisation for dye sensitized solar cells. Chem. Commun., 2014, 50, 12512-12514. 2) Seo Y.; Kim J. H. Rapid dye adsorption for dye-sensitized solar cells using a simple ultrasonication method. Journal of Industrial and Engineering Chemistry, 2013, 19, 488-492.

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