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Formation of efficient dye-sensitized solar cells by introducing an interfacial layer of hierarchically ordered macro-mesoporous TiO2 film

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  • Special Topic · Inorganic Solid State Chemistry and Energy Materials
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Abstract

Hierarchically ordered macro-mesoporous TiO2 films (Ti-Ma-Me) were fabricated on fluorine-doped tin oxide (FTO) substrates through the confinement self-assembly method. The prepared Ti-Ma-Me possesses periodically ordered structure and a large specific surface area, which was applied as an interfacial layer between the nanocrystalline TiO2 film (P25-TiO2) and FTO electrode in the dye-sensitized solar cell (DSSC). The introduction of a Ti-Ma-Me interfacial layer increased the shortcircuit current density (J sc) from 7.49 to 10.65 mA/cm2 and the open-circuit voltage (V oc) from 0.65 to 0.70 V as the result of its improved light harvesting efficiency by allowing for the high roughness factor and enhanced multiple internal reflection or scattering as well as reducing the back-transport reaction by blocking direct contact between the electrolyte and FTO electrode. Therefore, the photovoltaic conversion efficiency (η) was improved by 83% from 3.04% to 5.55%, as compared to a device using a bare P25 TiO2 photoanode.

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Authors and Affiliations

  1. State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China

    Jiang Du, XiaoYong Lai, Jonathan E. Halpert, Yu Yang & Dan Wang

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  1. Jiang Du
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  2. XiaoYong Lai
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  3. Jonathan E. Halpert
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  4. Yu Yang
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  5. Dan Wang
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Correspondence to Dan Wang.

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Du, J., Lai, X., Halpert, J.E. et al. Formation of efficient dye-sensitized solar cells by introducing an interfacial layer of hierarchically ordered macro-mesoporous TiO2 film. Sci. China Chem. 54, 930–935 (2011). https://doi.org/10.1007/s11426-011-4288-9

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  • DOI: https://doi.org/10.1007/s11426-011-4288-9

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