Reference : Optical spectroscopy study on the photo-response in multiferroic BiFeO3
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
Physics and Materials Science
Optical spectroscopy study on the photo-response in multiferroic BiFeO3
Burkert, F. [> >]
Kreisel, Jens mailto [University of Luxembourg > Rectorate >]
Kuntscher, C. A. [> >]
Applied Physics Letters
Yes (verified by ORBilu)
[en] We investigate the underlying mechanism of the photostriction effect in single-crystalline BiFeO3 by transmission measurements in the infrared and visible frequency range under continuous illumination with a green 532 nm). The small photo-induced changes in the transmission spectrum reveal three well-defined absorption features at 1.22 eV, 1.66 eV, and 2.14 eV, which we assign to charge-transfer excitons and in-gap defect states probably related to oxygen vacancies. The intensity of the three absorption features follows a linear dependence on the illumination intensity for an irradiance above 90 W/m(2). Published by AIP Publishing.
10.1063/1.4966548 182903

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