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International Journal of Photoenergy
Volume 2010, Article ID 136807, 11 pages
http://dx.doi.org/10.1155/2010/136807
Research Article

Bridged Phthalocyanine Systems for Sensitization of Nanocrystalline TiO2 Films

1Center for Hybrid and Organic Solar Energy (CHOSE), University of Rome “Tor Vergata”, Via Giacomo Peroni 400/402, 00131 Rome, Italy
2CNR-Istituto Struttura della Materia, Via Salaria Km. 29.5, Monterotondo Stazione, 00016 Rome, Italy
3CNR, Istituto per i Processi Chimico-Fisici, Salita Sperone Contrada Papardo, Faro Superiore, 98158 Messina, Italy

Received 1 June 2010; Accepted 28 June 2010

Academic Editor: Leonardo Palmisano

Copyright © 2010 Gloria Zanotti 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

Phthalocyanines based-dyes represent attractive alternatives to the expensive and polluting pyridyl based Ru complexes because of their photochemical and thermal stability, they do show in fact intense absorption in the UV/blue (Soret band) and the red/near IR (Q band) spectral regions and appear very promising as sensitizer dyes for DSSC. In this contribution we review the state of the art and the recent progress in the application of these materials as dyes for DSSC and present three new dyes which are bridged derivatives of Iron phthalocyanine. Synthesis, optical properties, electrochemical characterization and device performances are discussed with regard to the different substitution degree of the macrocycle.