Skip to main content
padlock icon - secure page this page is secure

Composition Effects on Optical Properties of Tb3+-Doped Heavy Germanate Glasses

Buy Article:

$52.00 + tax (Refund Policy)

A group of terbium-doped heavy germanate glasses were studied. Glass matrices contained GeO2, Gd2O3, BaO, and/or La2O3 with the Tb3+ doping concentration ranging from 1 to 5 mol%. The transmission and radioluminescence spectra were measured and their correlations with glass composition are discussed. It is found that the UV cut-off edge of glass matrices is related to the content of the network modifier BaO as well as to the mixed rare earths effect, while the concentration of trapping sites existing in the glass network is essential to the radioluminescence properties of the glass. The latter is also associated with the content of the network modifier BaO that produces unsaturated nonbridging oxygens in the glass lattice. Another important mechanism influencing the luminescence process involves the enhanced energy transfer from Gd3+ ions to Tb3+ emission centers. A self-sensitizing effect of Tb3+ is observed in the Tb3+ concentration range studied, which contributes to some extent to the enhanced Tb3+ green emission. La2O3 additions to the host glass play an active role of partitioning Tb3+ in the glass matrix, thereby showing an enhanced blue emission because of the reduced cross-relaxation probability between Tb3+ cations.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Document Type: Research Article

Affiliations: 1: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China 2: ENEA-FIS/ION, 00060 S. Maria di Galeria, Roma, Italy 3: Institute of Physics ASCR, Cukrovarnicka 10, 16253 Prague, Czech Republic

Publication date: February 1, 2005

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more