Improved efficiency of dye-sensitized solar cells through fluorine-doped TiO2 blocking layer

Suk In Noh, Kokn Nara Bae, Hyo Jin Ahn, Tae Yeon Seong

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


We report on improvement in the performance of dye-sensitized solar cells (DSSCs) through a fluorine (F)-doped TiO2 dense layer for use as a blocking layer. The F-doped TiO2 layer was deposited on commercial F-doped SnO2 (FTO) substrate by the hydrolysis of a TiCl4 aqueous solution with NH4F. Their structural, morphological, and optical properties were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy examinations. The photocurrent density-voltage characteristics show that DSSCs fabricated with the F-doped TiO2 layer exhibits higher conversion efficiency (∼5.24%) than ones with the undoped TiO2 layer (∼4.76%), and the bare FTO substrate (∼3.88%). This improvement is attributed to the combined effects of reduced interfacial resistance and effective blocking behavior by the F-doped TiO2 dense layer.

Original languageEnglish
Pages (from-to)8097-8101
Number of pages5
JournalCeramics International
Issue number7
Publication statusPublished - 2013 Sept


  • Blocking layer
  • Dye-sensitized solar cell
  • F-doped TiO
  • Interfacial resistance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry


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