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Hierarchical TiO2 flower-spheres with large surface area and high scattering ability: an excellent candidate for high efficiency dye sensitized solar cells

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Chemical Research in Chinese Universities Aims and scope

Abstract

Hierarchical TiO2 flower-spheres assembled from porous nanosheets-stacked of nanoparticles were synthesized by a simple hydrothermal method with one-step. The as-prepared TiO2 flower-spheres showed a diameter range from 200 nm to 550 nm and a large surface area of 188 m2/g. A double layer photoanode made of P25 nanoparticles and as-prepared TiO2 flower-spheres was fabricated for the dye sensitized solar cells(DSSCs). The efficient light scattering and dye absorption of the photoanode can be attributed to the top-layer of hierarchical TiO2 flower-spheres. DSSCs based on the double layers photoanode exhibit a higher energy conversion efficiency of 8.11% with a short-circuit photocurrent density of 17.87 mA/cm2, indicating that there is an increase of 38% in the conversion efficiency compared to those based on electrode P25(5.91%, 14.09 mA/cm2).

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Authors and Affiliations

  1. College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China

    Jian Ma, Shiting Yao, Sisi Du, Yanfeng Sun, Fengmin Liu & Geyu Lu

  2. School of Aerospace Science and Technology, Xidian University, Xi’an, 710126, P. R China

    Pengfei Cheng

Authors
  1. Jian Ma
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  2. Shiting Yao
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  3. Pengfei Cheng
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  4. Sisi Du
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  5. Yanfeng Sun
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  6. Fengmin Liu
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  7. Geyu Lu
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Corresponding authors

Correspondence to Pengfei Cheng or Fengmin Liu.

Additional information

Supported by the National Natural Science Foundation of China(Nos.61374218, 61134010, 61327804), the Program for Changjiang Scholars and Innovative Research Teams in University, China(No.IRT13018), the National High-Tech Research and Development Program of China(Nos.2013AA030902, 2014AA06A505), the Fundamental Research Funds for the Central Universities, China(Nos.JB151304, XJS14070) and the China Postdoctoral Science Foundation Funded Project(No. 2015M572525).

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Ma, J., Yao, S., Cheng, P. et al. Hierarchical TiO2 flower-spheres with large surface area and high scattering ability: an excellent candidate for high efficiency dye sensitized solar cells. Chem. Res. Chin. Univ. 31, 841–845 (2015). https://doi.org/10.1007/s40242-015-5037-y

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  • DOI: https://doi.org/10.1007/s40242-015-5037-y

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