Evaluation of characterization of rare-earth doped sesquioxide ceramic scintillators

Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Akio Ikesue, Akira Yoshikawa

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13 Citations (Scopus)


We investigated basic optical and scintillation properties of pure Y 2O3, Tm3+-doped Y2O3, pure Lu2O3 and Nd3+-doped Lu2O 3 transparent ceramics made by a sintering method. All ceramic samples showed 60-80% transparency, and some absorption bands due to Nd 3+ 4f-4f transition were observed in Nd3+:Lu 2O3 ceramic. Both Tm3+:Y2O 3 and Nd3+:Lu2O3 ceramics showed sharp luminescence lines corresponding to the 4f-4f transition under 285 nm (Tm3+:Y2O3) and 340 nm (Nd3+:Lu 2O3) excitation. The photoluminescence decay times were calculated to be about 24 μs for Tm3+:Y2O3 and 1 μs for Nd3+:Lu2O3, respectively. In radioluminescence measurements, Tm3+ and Nd3+ 4f-4f luminescence were observed for Tm3+-doped Y2O3 and Nd3+-doped Lu2O3 ceramics under 241Am 5.5 MeV α-ray excitation. Finally scintillation light yield was investigated with pulse height analysis.

Original languageEnglish
Pages (from-to)448-451
Number of pages4
JournalOptical Materials
Issue number2
Publication statusPublished - 2011 Dec


  • 4f-4f transition
  • Scintillators
  • Sesquioxide
  • Transparent ceramic


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