Enhanced photovoltaic properties of overlayer-coated nanocrystalline TiO2 dye-sensitized solar cells (DSSCs)

Jin Young Kim, Sangwook Lee, Jun Hong Noh, Hyun Suk Jung, Kug Sun Hong

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


TiO2 dye-sensitized solar cells (DSSCs) coated with various oxide layers were fabricated via a screen printing method and the effects of the oxide layers on the photovoltaic properties were systematically investigated. The open circuit voltage (Voc) was closely dependent to the conduction band (CB) edge position and the band gap energy (Eg) of the oxide layers, while the short circuit current density (Jsc) was related to the iso-electric point (IEP). Voc showed an increasing behavior with the CB edge position of the oxide layers, which could be explained by the blocking effect of the insulating layers. Although Jsc was basically proportional to the IEP and the resulting dye adsorption, there were other factors like the resistance of oxide layers. The cell efficiency could be enhanced by 60% when the cells were coated with the oxide layers of high E g and IEP.

Original languageEnglish
Pages (from-to)422-425
Number of pages4
JournalJournal of Electroceramics
Issue number2-4
Publication statusPublished - 2009 Oct
Externally publishedYes


  • Band gap energy (E)
  • Dye-sensitized solar cell (DSSC)
  • Iso-electric point (IEP)
  • Oxide coating layer
  • TiO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Materials Chemistry


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