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Fabrication of a double layered photoanode consisting of SnO sub(2) nanofibers and nanoparticles for efficient dye-sensitized solar cells

Wang, Yu-Fen ; Li, Ke-Nan ; Wu, Wu-Qiang ; Xu, Yang-Fan ; Chen, Hong-Yan ; Su, Cheng-Yong ; Kuang, Dai-Bin

RSC advances, 2013-07, Vol.3 (33), p.13804-13810 [Periódico revisado por pares]

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  • Título:
    Fabrication of a double layered photoanode consisting of SnO sub(2) nanofibers and nanoparticles for efficient dye-sensitized solar cells
  • Autor: Wang, Yu-Fen ; Li, Ke-Nan ; Wu, Wu-Qiang ; Xu, Yang-Fan ; Chen, Hong-Yan ; Su, Cheng-Yong ; Kuang, Dai-Bin
  • Assuntos: Electric potential
  • É parte de: RSC advances, 2013-07, Vol.3 (33), p.13804-13810
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    content type line 23
    ObjectType-Feature-1
  • Descrição: Hierarchical one-dimensional SnO sub(2) nanofibers (NFs) consisting of nanoparticles (NPs) have been synthesized and employed as an efficient light scattering layer to fabricate double layered dye-sensitized solar cells (DSSCs). The photovoltaic performance (5.44%) of the DSSC based on the SnO sub(2) NPs (14.5 mu m)/NFs (4.0 mu m) double layered photoanode showed a 26.3% enhancement compared to that of a SnO sub(2) NPs photoanode (18.5 mu m, 4.30%). Intensity modulation photocurrent spectroscopy (IMPS), intensity-modulated voltage spectroscopy (IMVS) and open-circuit voltage decay (OCVD) spectroscopy were used to investigate the kinetic process of electron transport and recombination within SnO sub(2) NPs or NPs/NFs based DSSCs, revealing a faster electron transport rate and a lower recombination rate in the SnO sub(2) NPs/NFs photoanode. The UV-vis diffuse reflectance spectroscopy results showed that the SnO sub(2) NPs/NFs possess better light scattering ability which enhanced their photovoltaic performance compared to the SnO sub(2) NPs. Furthermore, an overall power conversion efficiency of 6.31% (with a J sub(sc) of 16.78 mA cm super(-2), V sub(oc) of 711 mV and FF of 0.53) was achieved for the SnO sub(2) NPs/NFs double layered photoanode with an additional SnO sub(2) blocking layer, which suppressed electron recombination between the FTO glass and the electrolyte.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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