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Improved Voltage and Fill Factor by Using Zinc Oxide Thin Film as a Barrier Layer in Dye-Sensitized Solar Cells |
| WANG Peng;WANG Li-Duo;LI Bin;QIU Yong |
| Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education Department of Chemistry, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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WANG Peng, WANG Li-Duo, LI Bin et al 2005 Chin. Phys. Lett. 22 2708-2710 |
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Abstract A series of dye-sensitized solar cells based on ZnO-modified TiO2 nano-porous films have been prepared. The current--voltage characteristics of the cells show that the ZnO-modification can improve the open-circuit voltage and the fill factor but can decrease the short-circuit current. Dark current and transient photovoltage measurements are used to study the back reaction. It is indicated that the recombination process is suppressed by blocking the hole transporting from the nano-porous TiO2 since the surface of the semiconductor is almost fully covered with ZnO as a barrier layer.
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84.60.Jt
85.60.Bt
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Published: 01 October 2005
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| PACS: |
84.60.Jt
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(Photoelectric conversion)
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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