Enhanced photovoltaic properties of overlayer-coated nanocrystalline TiO 2 dye-sensitized solar cells (DSSCs)

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

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

TiO 2 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 (V oc ) was closely dependent to the conduction band (CB) edge position and the band gap energy (E g ) of the oxide layers, while the short circuit current density (J sc ) was related to the iso-electric point (IEP). V oc 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 J sc 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
Volume23
Issue number2-4
DOIs
Publication statusPublished - 2009 Oct 1
Externally publishedYes

Fingerprint

Oxides
solar cells
dyes
oxides
Conduction bands
conduction bands
Screen printing
Open circuit voltage
Short circuit currents
short circuit currents
Dye-sensitized solar cells
open circuit voltage
cells
printing
Energy gap
Coloring Agents
Current density
Dyes
Adsorption
current density

Keywords

  • 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
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Enhanced photovoltaic properties of overlayer-coated nanocrystalline TiO 2 dye-sensitized solar cells (DSSCs) . / Kim, Jin Young; Lee, Sangwook; Noh, Jun Hong; Jung, Hyun Suk; Hong, Kug Sun.

In: Journal of Electroceramics, Vol. 23, No. 2-4, 01.10.2009, p. 422-425.

Research output: Contribution to journalArticle

Kim, Jin Young ; Lee, Sangwook ; Noh, Jun Hong ; Jung, Hyun Suk ; Hong, Kug Sun. / Enhanced photovoltaic properties of overlayer-coated nanocrystalline TiO 2 dye-sensitized solar cells (DSSCs) In: Journal of Electroceramics. 2009 ; Vol. 23, No. 2-4. pp. 422-425.
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