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Advanced Materials

One-Dimensional Hierarchical Nanostructures of TiO2 Nanosheets on SnO2 Nanotubes for High Efficiency Solid-State Dye-Sensitized Solar Cells

Authors

  • Sung Hoon Ahn,

    1. Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Dong Jun Kim,

    1. Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Won Seok Chi,

    1. Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
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  • Jong Hak Kim

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea
    • Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea.
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Abstract

Hierarchical nanostructures of TiO2 nanosheets on SnO2 nanotubes (SNT@TNS) are uniformly dispersed in an organized mesoporous (OM) TiO2 film with large pores, high porosity, and good interconnectivity. The solid-state dye sensitized solar cells (ssDSSCs) fabricated with 10 wt% SNT@TNS dispersed in a OM–TiO2 film show an energy conversion efficiency of 7.7% at 100 mW cm−2, which is one of the highest values for N719-based ssDSSCs and much larger than that of a randomly oriented TiO2 nanoparticles-based cell (4.0%).

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