Ni_(1-x)Pt_(x) (x=00.08) Films as the Photocathode of Dye-Sensitized Solar Cells with High Effi ciency  

作　　者：Shengjie Peng Jifu Shi Juan Pei Yanliang Liang Fangyi Cheng Jing Liang Jun Chen 

机构地区：[1]Institute of New Energy Material Chemistry,Key Laboratory of Energy Material Chemistry,and Engineering Research Center of High-Energy Storage and Conversion,Ministry of Education,Nankai University,Tianjin 300071,China

出　　处：《Nano Research》2009年第6期484-492,共9页纳米研究（英文版）

基　　金：by the National 973(2009CB220003),863(2007AA05Z124);Tianjin High-Tech(07ZCGHHZ00700)Programs.

摘　　要：Films of Ni_(1-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 Ni_(0.94)Pt_(0.06 )film consisted of nanoparticles with a size of 46 nm and a Pt loading of 5.13μg/cm^(2).The Ni_(0.94)Pt_(0.06) photocathode exhibited high catalytic performance toward triiodide reduction,high light refl ectance,and low charge-transfer resistance.The DSC assembled with the Ni_(0.94)Pt_(0.06) photocathode gave a short-circuit photocurrent density(Jsc)of 16.79 mA/cm^(2),an open-circuit photovoltage(Voc)of 736 mV,and a fi ll factor(FF)of 66.4%,corresponding to an overall conversion effi ciency of 8.21%under standard AM 1.5 irradiation(100 mW/cm^(2)),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 fi lms are promising low-cost and high-performance photocathodes for use in DSCs.

关 键 词：Ni_(1–x)Pt_(x)fi lms chemical plating nanoparticles PHOTOCATHODE dye-sensitized solar cells 

分 类 号：TN3[电子电信—物理电子学]