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 [email protected], Fisk University, Nashville, Tennessee, United States

a2 [email protected], Fisk University, Nashville, Tennessee, United States

a3 [email protected], Fisk University, Nashville, Tennessee, United States

a4 [email protected], Fisk University, Nashville, Tennessee, United States

a5 [email protected], Lawrence Livermore National Laboratory, Livermore, California, United States

a6 [email protected], Lawrence Livermore National Laboratory, Livermore, California, United States

a7 [email protected], Fisk University, Nashville, Tennessee, United States

a8 [email protected], United States

a9 [email protected], Fisk University, Nashville, Tennessee, United States

a10 [email protected], 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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