Abstract
Films of Ni1−xPtx (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.
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Peng, S., Shi, J., Pei, J. et al. Ni1−xPtx (x=0–0.08) films as the photocathode of dye-sensitized solar cells with high efficiency. Nano Res. 2, 484–492 (2009). https://doi.org/10.1007/s12274-009-9044-5
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DOI: https://doi.org/10.1007/s12274-009-9044-5