MRS Proceedings

Table of Contents - Volume  1164  - Symposium L – Nuclear Radiation Detection Materials–2009  

Editors : D.L. Perry, A. Burger, L. Franks, K. Yasuda, M. Fiederie

Articles

Tb-doped Aluminosilicate Oxyfluoride Scintillating Glass and Glass-ceramic

2009 MRS Spring Meeting.

Zhengda Pana1, K. Jamesa2, Y. Cuia3, A. Burgera4, Nerine Cherepya5, S. A. Paynea6, A. Uedaa7, R. Aga Jr.a8, R. Mua9 and S. H. Morgana10

a1 zpan@fisk.edu, Fisk University, Nashville, Tennessee, United States

a2 Kc_James1@yahoo.com, Fisk University, Nashville, Tennessee, United States

a3 ycui@fisk.edu, Fisk University, Nashville, Tennessee, United States

a4 aburger@fisk.edu, Fisk University, Nashville, Tennessee, United States

a5 cherepy1@llnl.gov, Lawrence Livermore National Laboratory, Livermore, California, United States

a6 payne3@llnl.gov, Lawrence Livermore National Laboratory, Livermore, California, United States

a7 aueda@fisk.edu, Fisk University, Nashville, Tennessee, United States

a8 raga@fisk.edu, United States

a9 rmu@fisk.edu, Fisk University, Nashville, Tennessee, United States

a10 smorgan@fisk.edu, Fisk University, Nashville, Tennessee, United States

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.

(Received April 03 2009)

(Accepted July 21 2009)

Key Words

  • luminescence;
  • Tb;
  • ceramic
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