Vanadium-doped photorefractive titanosillenite crystal

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dc.creatorMontenegro, R.
dc.creatorShumelyuk, A.
dc.creatorKumamoto, R.
dc.creatorCarvalho, Jesiel Freitas
dc.creatorSantana, Ricardo Costa de
dc.creatorFrejlich, Jaime
dc.date.accessioned2024-07-11T15:29:39Z
dc.date.available2024-07-11T15:29:39Z
dc.date.issued2009
dc.description.abstractHolographic recording in a vanadium-doped B12TiO20 (BTO) photorefractive crystal puts into evidence a large hole–electron competition showing a fast and a slow hologram components. From the fast component evolution, some material parameters for the electron-donor photoactive centers are computed. The wavelength-resolved photoconductivity is shown to be strongly modified by V-doping compared to undoped and doped BTO with other elements. The increase of photoconductivity by green light preexposure is almost negligible here if compared with undoped BTO. Activation energy for dark conductivity measured for BTO:V is similar to that for undoped BTO, as measured close to room temperature, but sensibly lower than the value reported in the literature for a much higher temperature range. Optical absorption and EPR spectra do confirm already published results and suggestions about the possible role of vanadium in the sillenite structure.
dc.identifier.citationMONTENEGRO, R.; SHUMELYUK, A.; KUMAMOTO, R.; CARVALHO, J. F.; SANTANA, R. C.; FREJLICH, J. Vanadium-doped photorefractive titanosillenite crystal. Applied Physics B: lasers and optics, Berlim, v. 95, p. 475-482, 2009. DOI: 10.1007/s00340-009-3461-8. Disponível em: https://link.springer.com/article/10.1007/s00340-009-3461-8. Acesso em: 25 maio 2023.
dc.identifier.doi10.1007/s00340-009-3461-8
dc.identifier.issn0946-2171
dc.identifier.issne- 1432-0649
dc.identifier.urihttps://link.springer.com/article/10.1007/s00340-009-3461-8
dc.language.isoeng
dc.publisher.countryAlemanha
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.titleVanadium-doped photorefractive titanosillenite crystal
dc.typeArtigo

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