Cu@C nanoparticles dispersed RTILs used in the DSSC electrolyte??

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题名:	Cu@C nanoparticles dispersed RTILs used in the DSSC electrolyte??
作者:	Chen, F.-L., Letortu, A., Liao, C.-Y., Tsai, C.-K., Huang, H.-L., Sun, I.-W., Wei, Y.-L., Wang, H.P.
贡献者:	Department of Environmental Science and Engineering, Tunghai University
关键词:	Cu@C;Ionic;Liquid DSSC;XANES
日期:	2010-07
上传时间:	2013-05-15T09:02:26Z (UTC)
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][BF 4] and [bmim][PF 6]), 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 Cu 2O. The simulated solar efficiency of the DSSC utilizing the Cu@C nanoparticles dispersed RTIL electrolyte can be increased as high as 60%. ? 2009 Elsevier B.V. All rights reserved.
關聯:	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 619 (1-3) , pp. 112-114
显示于类别:	[環境科學與工程學系所] 期刊論文

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