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%).
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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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Ri, J.H., Ryu, G.I., Ko, S.G. et al. Anatase TiO2 Nanotubes-Aggregated Porous Microspheres for Ti Foil-Based Quasi-Solid State Dye-Sensitized Solar Cells with Improved Photovoltaic Performance. J. Electron. Mater. 48, 3459–3467 (2019). https://doi.org/10.1007/s11664-019-07119-4
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DOI: https://doi.org/10.1007/s11664-019-07119-4