Research Paper

Gd3+-sensitized Tb3+-doped Scintillating Silicate Glasses

  • WANG Sheng ,
  • QIAN Qi ,
  • ZHANG Qin-Yuan ,
  • YANG Zhong-Min ,
  • JIANG Zhong-Hong
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  • MOE Key Laboratory of Specially Functional Materials, Institute of Optical Communication Materials, South of China University of Technology, Guangzhou 510640, China

Received date: 2008-11-19

  Revised date: 2008-12-24

  Online published: 2009-07-20

Abstract

Gd3+-sensitized Tb3+-doped scintillating silicate glasses with Gd2O3 and Tb2O3 concentrations up to 45wt% were prepared. Effects of different Gd2O3 and Tb2O3 concentrations on the density, refractive index and luminescence properties under UV and X-ray excitations were investigated and the energy transfer mechanisms between Gd3+ and Tb3+ analyzed and discussed. The results show that, with the increasing concentrations of Tb3+ and Gd3+, a monotonic increase in the energy transfer efficiencies from Gd3+6P7/2 to Tb3+5H7 is observed followed by enhanced emissions centered at 620, 583, 541 and 496nm under 273nm UV excitation. However, with X-ray excitation, the incorporation of a large amount of Tb3+ weakens the luminescence emission due to the increase of point defects in glass.

Cite this article

WANG Sheng , QIAN Qi , ZHANG Qin-Yuan , YANG Zhong-Min , JIANG Zhong-Hong . Gd3+-sensitized Tb3+-doped Scintillating Silicate Glasses[J]. Journal of Inorganic Materials, 2009 , 24(4) : 773 -777 . DOI: 10.3724/SP.J.1077.2009.00773

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