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  • Optical Properties of Anatase and Rutile TiO2:Cr3+ Powders

    • Authors: Trinh, Thi Loan; Nguyen, Ngoc Long (2014)

  • Anatase 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...

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Browsing by Subject Absorption and Photoluminescent spectra

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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  • 62.pdf.jpg
  • Article

  • Optical Properties of Anatase and Rutile TiO2:Cr3+ Powders

    • Authors: Trinh, Thi Loan; Nguyen, Ngoc Long (2014)

  • Anatase 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...