Browsing by Subject K2GdF5 single crystal

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  • 55.pdf.jpg
  • Article


  • Authors: Vu, Phi Tuyen; Phan, Van Do; N.M., Khaidukov; Nguyen, Trong Thanh (2012)

  • Dy3+ -doped K2GdF5 single crystals were synthesized under hydrothermal condition. The UV excitation spectra and lifetimes of K2GdF5:Dy3+ were measured at room temperature. The excitation spectra have shown charge transfer state (CTS) of Dy3+ and energy transfer from Gd3+ to Dy3+ ions in K2GdF5:Dy3+ crystal. The decay curve of the K2GdF5 sample doped with 5.0 mol % Dy3+ ions is a non – exponential curve and is well fitted to the Inokuti – Hirayama model for S = 6. The energy transfer parameters (Q, CDA) and the critical distance (R0) are calculated.

  • 49.pdf.jpg
  • Article


  • Authors: Phan, Van Do; Vu, Phi Tuyen; N. M., Khaidukov; Nguyen, Trong Thanh (2012)

  • Double potassium gadolinium fluoride crystal doped with 5.0 mol % of Dy3+ ions (K2GdF5:Dy3+) was synthesized under hydrothermal condition. The absorption, luminescence spectra and lifetime of K2GdF5:Dy3+ sample were measured at room temperature. Judd – Ofelt (JO) theory is used to study the spectral properties and to calculate the radiative transition probabilities. The prediced branching ratios (βR), radiative lifetime (ιR), integrated emission cross – section (Σif) and stimulated emission cross – sections (σ(λp)) of the 4F9/2 excited level are reported.[u1]

Browsing by Subject K2GdF5 single crystal

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
or enter first few letters:  
Showing results 1 to 2 of 2
  • 55.pdf.jpg
  • Article


  • Authors: Vu, Phi Tuyen; Phan, Van Do; N.M., Khaidukov; Nguyen, Trong Thanh (2012)

  • Dy3+ -doped K2GdF5 single crystals were synthesized under hydrothermal condition. The UV excitation spectra and lifetimes of K2GdF5:Dy3+ were measured at room temperature. The excitation spectra have shown charge transfer state (CTS) of Dy3+ and energy transfer from Gd3+ to Dy3+ ions in K2GdF5:Dy3+ crystal. The decay curve of the K2GdF5 sample doped with 5.0 mol % Dy3+ ions is a non – exponential curve and is well fitted to the Inokuti – Hirayama model for S = 6. The energy transfer parameters (Q, CDA) and the critical distance (R0) are calculated.

  • 49.pdf.jpg
  • Article


  • Authors: Phan, Van Do; Vu, Phi Tuyen; N. M., Khaidukov; Nguyen, Trong Thanh (2012)

  • Double potassium gadolinium fluoride crystal doped with 5.0 mol % of Dy3+ ions (K2GdF5:Dy3+) was synthesized under hydrothermal condition. The absorption, luminescence spectra and lifetime of K2GdF5:Dy3+ sample were measured at room temperature. Judd – Ofelt (JO) theory is used to study the spectral properties and to calculate the radiative transition probabilities. The prediced branching ratios (βR), radiative lifetime (ιR), integrated emission cross – section (Σif) and stimulated emission cross – sections (σ(λp)) of the 4F9/2 excited level are reported.[u1]