Comprehensive Study on Ce-Doped (Gd, La) 2 Si 2 O 7 Scintillator

Shunsuke Kurosawa, Takahiko Horiai, Rikito Murakami, Yasuhiro Shoji, Jan Pejchal, Akihiro Yamaji, Shohei Kodama, Yuji Ohashi, Yuui Yokota, Kei Kamada, Akira Yoshikawa, Akimasa Ohnishi, Mamoru Kitaura

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Ce-doped (Gd, La) 2 Si 2 O 7 (Ce:La-GPS) scintillator was found to have a good light output of around 40 000 photons/MeV, while some other parameters have not been determined so far. In order to clarify the cause for such a high light yield, some physical parameters have been estimated in this paper. The bandgap energy of Ce:La-GPS was evaluated to be over 7.13 ± 0.03 eV for (Gd 0.75 , La 0.25 ) 2 Si 2 O 7 . Although Ce:La-GPS had wider bandgap compared with the other oxide scintillators, its light output was larger than values for some other scintillators. Since quantum yield of Ce:La-GPS was as high as around 0.8, the product of transfer efficiency and electron-hole pair generation efficiency was estimated to be around 0.9, which was higher than for the other scintillators. Thus, Ce:La-GPS was suggested to have high the product of transfer efficiency and/or electron-hole pair generation efficiency.

Original languageEnglish
Article number8368278
Pages (from-to)2136-2139
Number of pages4
JournalIEEE Transactions on Nuclear Science
Issue number8
Publication statusPublished - 2018 Aug


  • Oxide materials
  • scintillator


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