Effects of platinum doping on the photoelectrochemical properties of Fe2O3 electrodes

Ya Ping Hsu, Sheng Wei Lee, Jeng-Kuei Chang, Chung Jen Tseng*, Kan Rong Lee, Chih Hao Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The effects of platinum (Pt) doping on the structure and photoelectrochemical properties of Fe2O3electrodes have been investigated. The Pt-doped Fe2O3 electrodes were prepared by sol-gel and spin coated on fluorine-tin-oxide coated glass substrate. Influences of dopant concentration on material properties and photoelectrochemical characteristics were examined. Results of XRD and XPS showed that α-Fe2O3 can be obtained using 500 oC annealing in air. The band gaps of the samples obtained from reflectance and transmittance spectra measurement were found to vary from 1.98 to 2.03 eV. Theflat band potentials of the samples were obtained from the Mott-Schottky analysis and found to be in the range of -0.135 V to -0.6 V. The maximum photocurrent density of undoped and 0.1 at.% Pt-doped Fe2O3 electrodes was 0.5 mA/cm2 and 0.7 mA/cm2 under a 300 W Xe lamp system, respectively. Thegood photoelectrochemical results of the Pt-doped Fe2O3 electrode warrant further investigation for broader applications in the future.

Original languageEnglish
Pages (from-to)11615-11623
Number of pages9
JournalInternational Journal of Electrochemical Science
Volume8
Issue number9
StatePublished - 30 Sep 2013

Keywords

  • FeO
  • Photoelectrochemical method
  • Pt-doping
  • Sol-gel process
  • Thin films

Fingerprint Dive into the research topics of 'Effects of platinum doping on the photoelectrochemical properties of Fe<sub>2</sub>O<sub>3</sub> electrodes'. Together they form a unique fingerprint.

Cite this