Effect of mesoporous TiO2 bead diameter in working electrodes on the efficiency of dye-sensitized solar cells

Yang Chen, Fuzhi Huang, Dehong Chen, Lu Cao, Xiao Li Zhang, Rachel Anne Caruso, Yi-Bing Cheng

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Mesoporous TiO2 beads with diameters of 320±50, 550±50, and 830±40 nm, comprising interconnected and densely packed TiO2 nanocrystals, were used as working electrodes for dye-sensitized solar cells (DSCs). These electrodes possess high surface areas and superior light-scattering properties, which are ideal for DSC applications. Although the electrode prepared by using 320±50 nm beads demonstrated the highest dye loading and the electrode prepared by using 550±50 nm beads showed the best light-scattering properties in the wavelength region λ=400-800 nm, DSC devices with working electrodes composed of 830±40 nm beads achieved the highest power conversion efficiencies of 9.0% after treatment with TiCl4. A higher electron diffusion rate (4.35 × 10-4 cm2s-1) and an extended electron lifetime (58 ms) were observed in DSCs composed of the largest beads, 830±40 nm, attributable to a reduced amount of inter-bead barriers and a relatively small percentage of TiO2 nanocrystals on the surface of the beads, compared to cells containing 550±50 and 320±50 nm beads.

Original languageEnglish
Pages (from-to)1498-1503
Number of pages6
JournalChemSusChem
Volume4
Issue number10
DOIs
Publication statusPublished - 17 Oct 2011

Keywords

  • electron transport
  • mesoporous materials
  • photoanode
  • solar cells
  • titanium

Cite this

Chen, Y., Huang, F., Chen, D., Cao, L., Zhang, X. L., Caruso, R. A., & Cheng, Y-B. (2011). Effect of mesoporous TiO2 bead diameter in working electrodes on the efficiency of dye-sensitized solar cells. ChemSusChem, 4(10), 1498-1503. https://doi.org/10.1002/cssc.201100060
Chen, Yang ; Huang, Fuzhi ; Chen, Dehong ; Cao, Lu ; Zhang, Xiao Li ; Caruso, Rachel Anne ; Cheng, Yi-Bing. / Effect of mesoporous TiO2 bead diameter in working electrodes on the efficiency of dye-sensitized solar cells. In: ChemSusChem. 2011 ; Vol. 4, No. 10. pp. 1498-1503.
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abstract = "Mesoporous TiO2 beads with diameters of 320±50, 550±50, and 830±40 nm, comprising interconnected and densely packed TiO2 nanocrystals, were used as working electrodes for dye-sensitized solar cells (DSCs). These electrodes possess high surface areas and superior light-scattering properties, which are ideal for DSC applications. Although the electrode prepared by using 320±50 nm beads demonstrated the highest dye loading and the electrode prepared by using 550±50 nm beads showed the best light-scattering properties in the wavelength region λ=400-800 nm, DSC devices with working electrodes composed of 830±40 nm beads achieved the highest power conversion efficiencies of 9.0{\%} after treatment with TiCl4. A higher electron diffusion rate (4.35 × 10-4 cm2s-1) and an extended electron lifetime (58 ms) were observed in DSCs composed of the largest beads, 830±40 nm, attributable to a reduced amount of inter-bead barriers and a relatively small percentage of TiO2 nanocrystals on the surface of the beads, compared to cells containing 550±50 and 320±50 nm beads.",
keywords = "electron transport, mesoporous materials, photoanode, solar cells, titanium",
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Chen, Y, Huang, F, Chen, D, Cao, L, Zhang, XL, Caruso, RA & Cheng, Y-B 2011, 'Effect of mesoporous TiO2 bead diameter in working electrodes on the efficiency of dye-sensitized solar cells' ChemSusChem, vol. 4, no. 10, pp. 1498-1503. https://doi.org/10.1002/cssc.201100060

Effect of mesoporous TiO2 bead diameter in working electrodes on the efficiency of dye-sensitized solar cells. / Chen, Yang; Huang, Fuzhi; Chen, Dehong; Cao, Lu; Zhang, Xiao Li; Caruso, Rachel Anne; Cheng, Yi-Bing.

In: ChemSusChem, Vol. 4, No. 10, 17.10.2011, p. 1498-1503.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Chen, Yang

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AU - Chen, Dehong

AU - Cao, Lu

AU - Zhang, Xiao Li

AU - Caruso, Rachel Anne

AU - Cheng, Yi-Bing

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