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Tb-doped Aluminosilicate Oxyfluoride Scintillating Glass and Glass-ceramic

Published online by Cambridge University Press:  31 January 2011

Zhengda Pan ,
K. James ,
Y. Cui ,
A. Burger ,
Nerine Cherepy ,
S. A. Payne ,
A. Ueda ,
R. Aga Jr. ,
R. Mu  and
S. H. Morgan
Zhengda Pan
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
K. James
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
Y. Cui
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
A. Burger
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
Nerine Cherepy
Affiliation:
[email protected], Lawrence Livermore National Laboratory, Livermore, California, United States
S. A. Payne
Affiliation:
[email protected], Lawrence Livermore National Laboratory, Livermore, California, United States
A. Ueda
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
R. Aga Jr.
Affiliation:
[email protected], United States
R. Mu
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
S. H. Morgan
Affiliation:
[email protected], Fisk University, Nashville, Tennessee, United States
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Abstract

Two aluminosilicate oxyfluoride glass systems, a lead-cadmium-aluminosilicate oxyfluoride and a lithium-lanthanum-aluminosilicate oxyfluoride, doped with different TbF3 concentrations, have been fabricated and investigated. By appropriate heat treatment of the as-prepared glasses above, transparent glass-ceramics (TGC) were obtained. The glass-ceramics contain Tb:Pb(Cd)F2 or Tb:LaF3 nano-crystals in the glass-matrix. Differential scanning calorimetry, Raman scattering, and luminescence under both UV and β-particle excitation have been investigated on as-prepared glasses and glass-ceramics. It has been found that the terbium-doped lithium-lanthanum-aluminosilicate oxyfluoride glass exhibits good UV excited luminescence and β-induced luminescence. The luminescence yield increases for glass-ceramic compared to that of the as-prepared glass. The including of LaF3 in the glass-matrix is beneficial for a higher Tb-doping concentration and a high light yield. The light yield of lithium-lanthanum-aluminosilicate oxyfluoride glass and glass-ceramic is comparable to that of Schott IQI-301 product. However, the terbium-doped lead-cadmium-aluminosilicate oxyfluoride glass and glass-ceramic have a detrimental luminescence performance. The lead cations in the glass-matrix may create non-bridging oxygen defects, which are a strong source of charge traps, and correlated to a strong Raman “Boson” peak.

Keywords

luminescenceTbceramic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1164: Symposium L – Nuclear Radiation Detection Materials–2009 , 2009 , 1164-L09-03
Copyright
Copyright © Materials Research Society 2009

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