Low-Pt-loading acetylene-black cathode for high-efficient dye-sensitized solar cells |
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| Authors: | Fengshi Cai Jing Liang Zhanliang Tao Jun Chen Ruisong Xu |
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| Affiliation: | 1. Institute of New Energy Material Chemistry, Nankai University, Tianjin 300071, PR China;2. Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 510640, PR China;3. College of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300191, PR China |
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| Abstract: | We reported on the synthesis, characterization, and photovoltaic/electrochemical properties of Pt/acetylene-black (AB) cathode as well as their application in dye-sensitized solar cells (DSCs). The Pt/AB electrode was prepared through a thermal decomposition of H2PtCl6 on the AB substrate. SEM and TEM observations showed that the Pt nanoparticles were homogeneously dispersed on the AB surface. The Pt-loading content in the Pt/AB electrode was only about 2.0 μg cm−2, which was much lower than 5–10 μg cm−2 generally used for the Pt electrode in DSCs. Electrochemical measurements displayed a low charge-transfer resistance of 1.48 Ω cm2 for the Pt/AB electrode. Furthermore, when this low-Pt-loading electrode was used as the cathode of DSCs, an overall light-to-electricity energy conversion efficiency of 8.6% was achieved, showing commercially realistic energy conversion efficiency in the application of DSCs. |
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| Keywords: | Dye-sensitized solar cells Acetylene-black Pt Light-to-electricity conversion efficiency |
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