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

doi:10.1016/s1452-3981(23)13209-3

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

26 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 language	English
Pages (from-to)	11615-11623
Number of pages	9
Journal	International Journal of Electrochemical Science
Volume	8
Issue number	9
DOIs	https://doi.org/10.1016/s1452-3981(23)13209-3
State	Published - 2013

Keywords

Fe2O3
Photoelectrochemical method
Pt-doping
Sol-gel process
Thin films

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10.1016/s1452-3981(23)13209-3

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title = "Effects of platinum doping on the photoelectrochemical properties of Fe2O3 electrodes",

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.",

keywords = "Fe2O3, Photoelectrochemical method, Pt-doping, Sol-gel process, Thin films",

author = "Hsu, {Ya Ping} and Lee, {Sheng Wei} and Jeng-Kuei Chang and Tseng, {Chung Jen} and Lee, {Kan Rong} and Wang, {Chih Hao}",

year = "2013",

doi = "10.1016/s1452-3981(23)13209-3",

language = "English",

volume = "8",

pages = "11615--11623",

journal = "International Journal of Electrochemical Science",

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T1 - Effects of platinum doping on the photoelectrochemical properties of Fe2O3 electrodes

AU - Hsu, Ya Ping

AU - Lee, Sheng Wei

AU - Chang, Jeng-Kuei

AU - Tseng, Chung Jen

AU - Lee, Kan Rong

AU - Wang, Chih Hao

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - Fe2O3

KW - Photoelectrochemical method

KW - Pt-doping

KW - Sol-gel process

KW - Thin films

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DO - 10.1016/s1452-3981(23)13209-3

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VL - 8

SP - 11615

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JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

IS - 9

ER -

Effects of platinum doping on the photoelectrochemical properties of Fe₂O₃ electrodes

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