Time-resolved photoluminescence spectroscopy of Ce:Gd3Al 2Ga3O12 crystals

Azusa Satoh, Mamoru Kitaura, Kei Kamada, Akimasa Ohnishi, Minoru Sasaki, Kazuhiko Hara

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Time-resolved photoluminescence (PL) spectra of Ce-doped Gd 3Al2Ga3O12 (Ce:GAGG) crystal have been measured at various temperatures under Ce3+ 4f G 5d excitation. All time-resolved PL spectra show only a Ce3+ 5d G 4f band around 2.3 eV. Decay curves of this band consist of a fast and slow components. The temperature dependence of integrated intensities of the fast and slow components are analyzed by considering nonradiative processes starting from the ground level of an electron trap. From the results of analysis, we discuss relaxation processes of 5d electrons created under Ce3+ 4f G 5d excitation.

Original languageEnglish
Article number05FK01
JournalJapanese journal of applied physics
Volume53
Issue number5 SPEC. ISSUE 1
DOIs
Publication statusPublished - 2014 May

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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