| Original Articles |
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Efficiency Enhancement of Dye-Sensitized Solar Cells: Using Salt CuI as an Additive in an Ionic Liquid |
| CHEN Lie-Hang 1,2;XUE Bo-Fei 2;LIU Xi-Zhe2;LI Ke-Xin2;LUO Yan-Hong2;MENG Qing-Bo2;WANG Rui-Lin1;CHEN Li-Quan2 |
| 1 College of Materials Science and Engineering, Sichuan University, Chengdu 610064
2 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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CHEN Lie-Hang, XUE Bo-Fei, LIU Xi-Zhe et al 2007 Chin. Phys. Lett. 24 555-558 |
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Abstract Energy conversion efficiency of the dye-sensitized solar cell is improved from 3.5% to 4.5% by adding a small amount of CuI into an ionic liquid electrolyte. It is found that other copper-I salts, for example, CuBr, have the same effect for the dye-sensitized solar cell. Experimental results show that no Cu 2+ ions exist in this electrolyte. It is suggested that this improvement is caused by the adsorption of Cu+ onto the TiO2 porous film.
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| Keywords:
81.05.Lg
81.10.Dn
84.60.Jt
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Received: 23 October 2006
Published: 24 February 2007
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| PACS: |
81.05.Lg
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(Polymers and plastics; rubber; synthetic and natural fibers; organometallic and organic materials)
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81.10.Dn
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(Growth from solutions)
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84.60.Jt
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(Photoelectric conversion)
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