4.7 Article

The Harmful Effects of Sintering Aids in Pr:LuAG Optical Ceramic Scintillator

Journal

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 95, Issue 7, Pages 2130-2132

Publisher

WILEY
DOI: 10.1111/j.1551-2916.2012.05275.x

Keywords

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Funding

  1. National Science Foundation of China [11005139, 51172262]
  2. National High Technology Research and Development Program of China [2009AA03Z437]
  3. Key Program of Science and Technology Comission Foundation of Shanghai [10JC1416000]
  4. Czech MSMT KONTAKT II [LH12185]
  5. GA AV KAN [300100802]
  6. CARIPLO Foundation

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We investigate scintillation properties and energy trapping processes in Pr-doped Lu3Al5O12 (Pr:LuAG) optical ceramics, specifically focusing on the effects of sintering aids. Ceramics with good transmittance and scintillation properties comparable with those of single crystals were obtained without the use of sintering aids. Their introduction caused a transparency improvement, accompanied, however, by a deterioration of scintillation properties in terms of light yield and time decay. We interpret the results, discussing the role of aliovalent sintering agents on the formation of point defects acting as traps affecting the transport of charge carriers to the luminescence centers.

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