Cu@C nanoparticles dispersed RTILs used in the DSSC electrolyte

F. L. Chen, A. Letortu, C. Y. Liao, C. K. Tsai, H. L. Huang, I. W. Sun, Y. L. Wei, H. Paul Wang

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

To enhance efficiency of a dye-sensitized solar cell (DSSC), a very small amount of Cu@C nanoparticles (prepared by carbonization of Cu 2+-starch complexes at 573K) is dispersed in room temperature ionic liquids (RTILs) (i.e., [bmim][BF4] and [bmim][PF6]), which is used as an electrolyte of the DSSC. By XRD and TEM, it is found that the Cu@C nanoparticles having Cu diameters of 7 and 18 nm are coated with a carbon shell (3-5 nm in thickness). Experimentally, the electrical conductivity of the RTILs dispersed with 0.1% of the Cu@C nanoparticles is increased by 8-15% in comparison with the plain RTIL. The X-ray absorption near edge structure (XANES) spectra of copper show that about 7% of Cu in the Cu@C nanoparticles dispersed RTILs are oxidized to CuO or Cu2O. The simulated solar efficiency of the DSSC utilizing the Cu@C nanoparticles dispersed RTIL electrolyte can be increased as high as 60%.

All Science Journal Classification (ASJC) codes

  • 核能與高能物理
  • 儀器

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