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Journal of Nanomaterials
Volume 2015 (2015), Article ID 450405, 8 pages
http://dx.doi.org/10.1155/2015/450405
Research Article

A Comparison of the Performances of Different Mesoporous Titanias in Dye-Sensitized Solar Cells

1Dipartimento di Chimica, Università degli Studi di Roma La Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
2Faculty of Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON, Canada L1H 7L7

Received 13 January 2015; Revised 8 May 2015; Accepted 10 May 2015

Academic Editor: William W. Yu

Copyright © 2015 Alessandro Latini et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present work aims at optimizing titanium dioxide morphology for dye-sensitized solar cells applications. Five different anatase phase mesoporous titanias were prepared and tested as photoanodes in dye-sensitized solar cells. The materials were prepared by using a template approach. Two materials were synthesized by using monodisperse silica nanospheres and the other three using two different organic templating agents (Pluronic P123 and Brij 58). A complete characterization of the obtained materials was performed by powder XRD, FEG-SEM, UV-Vis reflectance spectroscopy, BET surface area measurements, and TG-DTA. Several cells were assembled using N719 as dye and a nonvolatile electrolyte based on benzonitrile. The cells were tested by means of J-V curves under simulated solar radiation, IPCE, and dark current measurements. The highest efficiencies were achieved with titania prepared by using Pluronic P123 as template (%), while the lowest efficiencies were recorded with using titania samples prepared with the silica nanospheres template (%). The different performances of the samples are examined and discussed.