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Anatase TiO2 Nanotubes-Aggregated Porous Microspheres for Ti Foil-Based Quasi-Solid State Dye-Sensitized Solar Cells with Improved Photovoltaic Performance

  • Jin Hyok RiEmail author
  • Gwon Il Ryu
  • Song Guk Ko
  • Byol Kim
  • Kyong Su Sonu
Article
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Abstract

Fibrous anatase TiO2 nanotubes-aggregated porous microspheres (AMS) with high specific surface area (160 m2 g−1) were fabricated through an alkali solution-assisted hydrothermal process followed by an acid post-treatment and a calcination by using commercial TiO2 nanopowder (P25) as raw material. The resultant AMS microspheres with an average diameter of ~ 5 μm have three-dimensional network-like porous structures formed by accumulation and winding of fibrous TiO2 nanotubes with diameter < 10 nm. When used as photoanode materials of Ti foil-based quasi-solid state dye-sensitized solar cells, the AMS film-based solar cell gives a conversion efficiency of 7.16% with 34% improvement when compared to the P25 film-based one (5.34%).

Keywords

Ti foil-based dye-sensitized solar cell anatase TiO2 microsphere hydrothermal process electron transfer electron lifetime 

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Notes

Acknowledgments

This work was supported by the state project of D.P.R. Korea ‘Development of the Perovskite Solar Cell’ (No. 2016-05).

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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Jin Hyok Ri
    • 1
    Email author
  • Gwon Il Ryu
    • 1
  • Song Guk Ko
    • 1
  • Byol Kim
    • 1
  • Kyong Su Sonu
    • 1
  1. 1.Department of Biophysics, Faculty of Life ScienceKim Il Sung UniversityPyongyangDemocratic People’s Republic of Korea

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