Suppression of defect related host luminescence in LuAG single crystals

Hiraku Ogino, Akira Yoshikawa, Martin Nikl, Romana Kucerkova, Jun Ichi Shimoyama, Kohji Kishio

Research output: Contribution to journalConference article

14 Citations (Scopus)

Abstract

To study suppression of the unwanted host luminescence in aluminum garnet crystals, effect of Ga substitution in both undoped and Eu doped Lu 3Al5O12 single crystal was examined at the crystals grown by the micro-pulling down(μ-PD) method. Optical properties such as excitation spectra, radioluminescence spectra and photoluminescence decay are presented. In the GA-admixed crystal strong suppression of host luminescence due to an exciton localized around the Lu-Al antisite defect was observed even at the Ga concentration of 10mol%. Ga substitution also modify the charge transfer excitation band in the Eu doped LuGAG and change the decay time in the Eu3+ red emission lines.

Original languageEnglish
Pages (from-to)191-205
Number of pages15
JournalPhysics Procedia
Volume2
Issue number2
DOIs
Publication statusPublished - 2009 Aug
Event2008 International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, ICL'08 - Lyon, France
Duration: 2008 Jul 72008 Jul 11

Keywords

  • A1. Characterization
  • A2. Growth from melt
  • B1. Oxides
  • B2. Scintillator materials

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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