Acta Physica Sinica, Volume. 69, Issue 16, 160201-1(2020)

Significant enhancement of the performance of dye-sensitized solar cells with photoelectrode co-doped graphene and hybrid SiO2@Au nanostructure

Yuan Zhang1, Chen Chen1, Mei-Ya Li2、*, and Mengdai Luoshan3、*
Author Affiliations
  • 1School of Information Engineering, Hubei Minzu University, Enshi 445000, China
  • 2School of Physics and Technology, Wuhan University, Wuhan 430072, China
  • 3School of Science, Hubei University of Technology, Wuhan 430068, China
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    Attributed to facile fabrication, low production costs and outstanding photoelectric properties, dye-sensitized solar cells (DSCs) have attracted widespread attention in recent years. In order to achieve better photoelectric conversion efficiency of the DSCs, a series of TiO2 nanocomposite photoanodes co-doped with different amounts of hybrid SiO2@Au nanostructures and certain amount of graphene are prepared by a mechanical ball milling method. The influence of SiO2@Au nanostructures and graphene on the performance of the photoanodes and their DSCs were investigated. The Au nanoparticles can remarkably enhance the short-circuit current density (Jsc) due to the local surface plasmon resonance effect of the noble metal nanoparticles. As a unique two-dimensional material, graphene has several amazing characteristics, such as high specific surface area and excellent conductivity. Studies showed that by introducing both SiO2@Au nanostructures and graphene, the light-absorbing, electron mobility and dye loading of the photoanodes were remarkably increased. Experimental results indicated that in comparison with those DSCs based with pure TiO2 photoanode, the DSCs with photoanodes incorporated with SiO2@Au nanostructures and graphene showed the optimal performance with short-circuit current density (Jsc) of 15.59 mA/cm2 and photoelectric conversion efficiency (PCE) of 6.68%, increasing significantly by 15.67% and 8.8%, respectively. This significant enhancement in Jsc and PCE of DSCs are mainly attributed to the increase in light-absorption and dye-loading of the photoanodes due to the hybrid SiO2@Au nanostructures and graphene.

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    Yuan Zhang, Chen Chen, Mei-Ya Li, Mengdai Luoshan. Significant enhancement of the performance of dye-sensitized solar cells with photoelectrode co-doped graphene and hybrid SiO2@Au nanostructure [J]. Acta Physica Sinica, 2020, 69(16): 160201-1

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    Paper Information

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    Received: Nov. 11, 2019

    Accepted: --

    Published Online: Jan. 4, 2021

    The Author Email: Luoshan Mengdai (Luosmd@hbut.edu.cn)

    DOI:10.7498/aps.69.20191722

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