Photoluminescence and scintillation properties of Ce–doped Ca(Gd,Y)Al3O7 single crystals

Kenta Igashira, Daisuke Nakauchi, Yutaka Fujimoto, Takumi Kato, Noriaki Kawaguchi, Takayuki Yanagida

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Ce–doped Ca(Gd,Y)Al3O7 single crystals were synthesized by the optical floating zone method, and the photoluminescence and scintillation properties were evaluated. Photoluminescence and scintillation with a broad band around 420 nm are observed in all the samples. The decay curves are well–approximated by a sum of two exponential functions, which are due to the 5d–4f transition of Ce3+ and intrinsic luminescence in the host material. As a result of the pulse height spectra under γ–rays irradiation from 241Am, the CaYAl3O7 sample shows the highest scintillation light yield of 6500 ph/MeV among the present samples.

Original languageEnglish
Article number109497
JournalOptical Materials
Volume98
DOIs
Publication statusPublished - 2019 Dec

Keywords

  • Afterglow
  • Cerium
  • Melilite
  • Photoluminescence
  • Scintillator
  • Single crystal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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