SrTiO3/TiO2 hybridstructure as photoanode in dye-sensitized solar cell

Yu Shiuan Wang, Ting Ting Chen, Yi Jen Huang, Tzu Ping Huang, Yin Yu Lee, Hsin-Tien Chiu, Chi Young Lee*

*Corresponding author for this work

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In dye-sensitized solar cells (DSSCs), the charge recombination at the TiO2/dye/electrolyte interface greatly influences the photoelectron conversion efficiency. Hybrid semiconductor materials with matched band potentials are designed to reduce the charge recombination. In this study, SrTiO3/TiO2 hybrid-structure was synthesized by using TiO2 nanoparticles as template in a hydrothermal, showing a negative shift in the flat band potential. The DSSC with the SrTiO3/TiO 2 anode exhibits an increased photovoltage and a reduced photocurrent. The suppression of charge recombination at the TiO 2/dye/electrolyte interface was observed in the electrochemical impedance spectroscopy, causing an improvement in the photovoltage. However, the SrTiO3/TiO2 system shows an obstructed electrons injection from the dye to SrTiO3/TiO2, limiting the photocurrent performance. The photoelectrochemical properties of the SrTiO 3/ TiO2 system are discussed in detail herein.

Original languageEnglish
Pages (from-to)1437-1441
Number of pages5
JournalJournal of the Chinese Chemical Society
Volume60
Issue number12
DOIs
StatePublished - 1 Jan 2013

Keywords

  • Charge recombination
  • Electron injection

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    Wang, Y. S., Chen, T. T., Huang, Y. J., Huang, T. P., Lee, Y. Y., Chiu, H-T., & Lee, C. Y. (2013). SrTiO3/TiO2 hybridstructure as photoanode in dye-sensitized solar cell. Journal of the Chinese Chemical Society, 60(12), 1437-1441. https://doi.org/10.1002/jccs.201300284