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Application of weak ferromagnetic BiFeO3 films as the photoelectrode material under visible-light irradiation
Nanjing University, Peoples R China.
Nanjing University, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2582-1740
Nanjing University, Peoples R China.
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2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 91, no 2, 022114- p.Article in journal (Refereed) Published
Abstract [en]

BiFeO3 films prepared by pulsed laser deposition on Pt/TiO2/SiO2/Si substrates were studied as photoelectrode for water splitting. Under visible-light irradiation, the photocurrent intensity of the polycrystalline BiFeO3 film was found to double that of the amorphous one in a three-electrode cell. The incident photon to current conversion efficiency for the polycrystalline BiFeO3 electrode was approximately 16% at 350 nm and 7% at 530 nm at 1.5 V (versus saturated calomel electrode). The ferromagnetism of the amorphous BiFeO3 film was an order of magnitude weaker than that of the polycrystalline one, supporting the "size effect" explanation for magnetic origin. (C) 2007 American Institute of Physics.

Place, publisher, year, edition, pages
American Institute of Physics (AIP) , 2007. Vol. 91, no 2, 022114- p.
National Category
Materials Engineering
URN: urn:nbn:se:liu:diva-115712DOI: 10.1063/1.2757132ISI: 000248017300045OAI: diva2:796082
Available from: 2015-03-18 Created: 2015-03-18 Last updated: 2015-03-30

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