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Ni1−xPtx (x=0–0.08) films as the photocathode of dye-sensitized solar cells with high efficiency

Peng, Shengjie and Shi, Jifu and Pei, Juan and Liang, Yanliang and Cheng, Fangyi and Liang, Jing and Chen, Jun (2009) Ni1−xPtx (x=0–0.08) films as the photocathode of dye-sensitized solar cells with high efficiency. Nano Research, 2 (6). pp. 484-492. ISSN 1998-0124 (Print) 1998-0000 (Online)

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Official URL: http://www.springerlink.com/content/j17063870k2683...

Abstract

Films of Ni1−x Pt x (x=0, 0.02, 0.04, 0.06, and 0.08) have been prepared on fluorine-doped tin oxide-coated (FTO) glass substrates by a chemical plating method and used as the photocathode for dye-sensitized solar cells (DSCs). The Ni0.94Pt0.06 film consisted of nanoparticles with a size of 4–6 nm and a Pt loading of 5.13 μg/cm2. The Ni0.94Pt0.06 photocathode exhibited high catalytic performance toward triiodide reduction, high light reflectance, and low charge-transfer resistance. The DSC assembled with the Ni0.94Pt0.06 photocathode gave a short-circuit photocurrent density (J sc) of 16.79 mA/cm2, an open-circuit photovoltage (V oc) of 736 mV, and a fill factor (FF) of 66.4%, corresponding to an overall conversion efficiency of 8.21% under standard AM 1.5 irradiation (100 mW/cm2), which is higher than that for the DSC with a pure Pt photocathode obtained by conventional thermal decomposition. Furthermore, the DSC based on the Ni0.94Pt0.06 photocathode showed good stability. The results indicate that Ni0.94Pt0.06 films are promising lowcost and high-performance photocathodes for use in DSCs.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8372
Deposited By:JNCASR
Deposited On:27 Apr 2010 10:12
Last Modified:27 Apr 2010 10:12

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