Effect of MnTiO3 surface treatment on the performance of dye-sensitized solar cells

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

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We investigate the effect of MnTiO3 surface treatment on the performance of dye-sensitized solar cells (DSSCs). The MnTiO3-treated TiO2 sample reveals a smoother surface with fewer cracks than the bare TiO2 sample. It is shown that the MnTiO3 is an amorphous layer (∼2 nm thick). The MnTiO3-treated TiO2 sample exhibits higher absorbance across the wavelength region of 450-800 nm than the bare TiO2 sample. The MnTiO3-treated sample gives the higher point of zero charge than the bare sample. Measurements show that the open-circuit voltage and the short circuit current are 0.64 and 0.67 V and 12.3 and 15.7 mA/cm2 for DSSCs with the bare and MnTiO 3-treated TiO2 electrodes, respectively. The MnTiO 3 treatment improves the cell efficiency by about 25%.

Original languageEnglish
Pages (from-to)67-70
Number of pages4
JournalMaterials Letters
Volume96
DOIs
Publication statusPublished - 2013

Keywords

  • Chemical bath deposition
  • Dye-sensitized solar cell
  • MnTiO
  • Surface treatment

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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