| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Hierarchical Porous Carbon Counter Electrode for Dye-Sensitized Solar Cells |
| WANG Gui-Qiang**, HUANG Cong-Cong, XING Wei, ZHUO Shu-Ping
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College of Chemical Engineering, Shandong University of Technology, Zibo 255049
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| Cite this article: |
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WANG Gui-Qiang, HUANG Cong-Cong, XING Wei et al 2011 Chin. Phys. Lett. 28 038801 |
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Abstract Hierarchical porous carbon is prepared by a combination of self-organization and chemical activation and explored as counter electrode for dye-sensitized solar cells. Pore structure analysis shows that micropores generated within the mesopore wall and the pristine mesopore structure of mesoporous carbon are preserved during KOH activation. Electrochemical impedance spectroscopy studies demonstrate a relatively high electrocatalytic activity of hierarchical porous carbon electrode for triiodide reduction, as compared with a pristine mesoporous carbon electrode. This enhanced electrocatalytic activity is beneficial for improving the photovoltaic performance of dye-sensitized solar cells. The overall conversion efficiency of dye-sensitized solar cells with the hierarchical porous carbon electrode increased by 11.5% compared with that of the cell with a pristine mesoporous carbon electrode.
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| Keywords:
88.40.hj
81.05.Zx
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Received: 04 November 2010
Published: 28 February 2011
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| PACS: |
88.40.hj
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(Efficiency and performance of solar cells)
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81.05.Zx
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(New materials: theory, design, and fabrication)
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