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A transparent conductive graphene film is investigated as front contact in dye-sensitized solar cells (DSSCs), as an alternative to traditional transparent conducting oxides (TCO). The film is composed of poly-crystalline few-layers graphene, covering homogeneously an area of 1 cm2, deposited by chemical vapour deposition (CVD) technique on larger area Cu catalyst substrate and transferred on glass. DSSC photoanode is then fabricated, according to consolidated procedure, by sequential casting of TiO2 films through tape casting technique, followed by annealing at 500 °C, and sensitization with N719 dye. An outstanding value of photoconversion efficiency as high as 2% is recorded for the best cell, under one sun irradiation (AM 1.5 G, 100 mW cm−2), which is the highest ever reported for this kind of devices using graphene as front conducting film. Compared to previous results in the literature, the application …
Publication date: 
1 Apr 2015

Gurpreet Singh Selopal, Riccardo Milan, Luca Ortolani, Vittorio Morandi, Rita Rizzoli, Giorgio Sberveglieri, Giulio Paolo Veronese, Alberto Vomiero, Isabella Concina

Biblio References: 
Volume: 135 Pages: 99-105
Solar Energy Materials and Solar Cells