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Performance enhancement of quantum dot sensitized solar cells under TiO2 nanotube arrays membranes optimization

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Abstract

One-dimensional single crystalline TiO2 nanotube arrays with different length are prepared, and transferred onto the FTO glass substrate with different concentration of Ti-precursor. The relationships between the concentration of Ti-precursor and the optical properties, as well as the photovoltaic performance of the as-prepared solar cells have been investigated. The optical absorption intensity is obviously enhanced and optical absorption edge is expanded to 800 nm for the CdSe/CdS/TiO2 NTs solar cells. In addition, 20 μm - CdSe/CdS/TiO2 NTs solar cells with 0.1 M Ti-precursor have the great photovoltaic conversion efficiency of 4.18%. The excellent photovoltaic performance is attributed to the suitable TiO2 connection layer from 0.1 M Ti-precursor and length of TiO2 NTs, which greatly enhances the electron-hole generation and charge transfer performance in the solar cells. Finally, the photovoltaic efficiency of the as-fabricated solar cells can be further enhanced to 4.51% through the ZnS passivation layer deposition.

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Authors and Affiliations

  1. School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, 410111, China

    Zhuoyin Peng, Lida Liao & Jian Chen

  2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China

    Yueli Liu & Yinghan Zhao

Authors
  1. Zhuoyin Peng
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  2. Yueli Liu
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  3. Yinghan Zhao
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  4. Lida Liao
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  5. Jian Chen
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Correspondence to Zhuoyin Peng.

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Peng, Z., Liu, Y., Zhao, Y. et al. Performance enhancement of quantum dot sensitized solar cells under TiO2 nanotube arrays membranes optimization. Electron. Mater. Lett. 13, 359–367 (2017). https://doi.org/10.1007/s13391-017-6219-1

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  • DOI: https://doi.org/10.1007/s13391-017-6219-1

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