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dc.contributor.authorTrinh, Thi Loan-
dc.contributor.authorNguyen, Ngoc Long-
dc.date.accessioned2017-08-09T07:47:08Z-
dc.date.available2017-08-09T07:47:08Z-
dc.date.issued2014-
dc.identifier.citationTrinh, T. L., Nguyen, N. L. (2014). Optical Properties of Anatase and Rutile TiO2:Cr3+ Powders. VNU Journal of Science: Mathematics – Physics, Vol. 30, No. 2 (2014) 59-67-
dc.identifier.issn2588-1124-
dc.identifier.urihttp://repository.vnu.edu.vn/handle/VNU_123/56071-
dc.description.abstractAnatase TiO2 powders doped with 0.5, 1.0, 4.0 and 10 mol% Cr3+ have been prepared by hydrothermal method. The Cr3+ concentration and annealing effects on crystalline structure, absorption and photoluminescent spectra of the synthesized samples have been investigated. The band gap energy of anatase and rutile TiO2:Cr3+ powders with different dopant contents has been determined. Urbach energies (Eu) characterized for the structural disorder in the anatase and rutile TiO2 host lattice doped with Cr3+ ions also have been calculated with different impurity concentrations. At low annealing temperature (≤ 600 oC), the samples exhibited anatase phase and the photoluminescent spectra consisted of sharp peaks related to the 2E(2G) → 4A2(4F)transitions of ions Cr3+ in strong octahedral field. At high annealing temperature (1100 oC), the samples exhibited rutile phase and the photoluminescent spectra had a broad emission band, which was assigned to the 4T1(4F) → 4A2(4F) transitions within the Cr3+ ions in weak octahedral field.en_US
dc.language.isoenen_US
dc.publisherH. : ĐHQGHNen_US
dc.relation.ispartofseriesVNU Journal of Science: Mathematics – Physics-
dc.subjectAnatase and rutile TiO2en_US
dc.subjectHydrothermal methoden_US
dc.subjectAbsorption and Photoluminescent spectraen_US
dc.titleOptical Properties of Anatase and Rutile TiO2:Cr3+ Powdersen_US
dc.typeArticleen_US
Appears in Collections:Mathematics and Physics


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  • Full metadata record
    DC FieldValueLanguage
    dc.contributor.authorTrinh, Thi Loan-
    dc.contributor.authorNguyen, Ngoc Long-
    dc.date.accessioned2017-08-09T07:47:08Z-
    dc.date.available2017-08-09T07:47:08Z-
    dc.date.issued2014-
    dc.identifier.citationTrinh, T. L., Nguyen, N. L. (2014). Optical Properties of Anatase and Rutile TiO2:Cr3+ Powders. VNU Journal of Science: Mathematics – Physics, Vol. 30, No. 2 (2014) 59-67-
    dc.identifier.issn2588-1124-
    dc.identifier.urihttp://repository.vnu.edu.vn/handle/VNU_123/56071-
    dc.description.abstractAnatase TiO2 powders doped with 0.5, 1.0, 4.0 and 10 mol% Cr3+ have been prepared by hydrothermal method. The Cr3+ concentration and annealing effects on crystalline structure, absorption and photoluminescent spectra of the synthesized samples have been investigated. The band gap energy of anatase and rutile TiO2:Cr3+ powders with different dopant contents has been determined. Urbach energies (Eu) characterized for the structural disorder in the anatase and rutile TiO2 host lattice doped with Cr3+ ions also have been calculated with different impurity concentrations. At low annealing temperature (≤ 600 oC), the samples exhibited anatase phase and the photoluminescent spectra consisted of sharp peaks related to the 2E(2G) → 4A2(4F)transitions of ions Cr3+ in strong octahedral field. At high annealing temperature (1100 oC), the samples exhibited rutile phase and the photoluminescent spectra had a broad emission band, which was assigned to the 4T1(4F) → 4A2(4F) transitions within the Cr3+ ions in weak octahedral field.en_US
    dc.language.isoenen_US
    dc.publisherH. : ĐHQGHNen_US
    dc.relation.ispartofseriesVNU Journal of Science: Mathematics – Physics-
    dc.subjectAnatase and rutile TiO2en_US
    dc.subjectHydrothermal methoden_US
    dc.subjectAbsorption and Photoluminescent spectraen_US
    dc.titleOptical Properties of Anatase and Rutile TiO2:Cr3+ Powdersen_US
    dc.typeArticleen_US
    Appears in Collections:Mathematics and Physics


  • 62.pdf
    • Size : 2,21 MB

    • Format : Adobe PDF

    • View : 
    • Download :