Single crystal growth and luminescence properties of CeF 3-CaF2 solid solution grown by the micro-pulling-down method

Akira Yoshikawa, Kyoung Jin Kim, Kenji Aoki, Kei Kamada, Fumio Saito, Jan Pejchal, Natalia Solovieva, Martin Nikl

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

(CexCa1-x)F2+x single crystal with x = 0.0001 - 0.03 were grown by the μ-PD method. Ce3+ doping in CaFa lattice gives rise to characteristic absorption and emission bands, which are governed by the characteristics of the isolated Ce3+ -F i- C4v pair centers and small clusters composed from these pairs. With increasing Ce concentration there is a strong increase of the absorption bands related to the cluster centres, but the radioluminescence spectra are always governed by the emission of the isolated Ce3+ -Fi- C4v pairs without noticeable changes in the emission band shape. Highest radioluminescence intensity is achieved for Ce0.1{%} concentration and above 1{%} of Ce the onset of concentration quenching is observed. Scintillation response is governed by the energy transfer from the CaFa host lattice and even for the Ce3{%} sample the dominant scintillation decay time is about 50{%} longer with respect to the photoluminescence decay time of Ce3+ -Fi- C4v pair centres. Energy transfer processes and the role of different Ce3+-based centers are discussed.

Original languageEnglish
Article number4545235
Pages (from-to)1484-1487
Number of pages4
JournalIEEE Transactions on Nuclear Science
Volume55
Issue number3
DOIs
Publication statusPublished - 2008 Jun 1

Keywords

  • Ce perturbed center
  • Crystals
  • Fluoride
  • Scintillator

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Single crystal growth and luminescence properties of CeF <sub>3</sub>-CaF<sub>2</sub> solid solution grown by the micro-pulling-down method'. Together they form a unique fingerprint.

  • Cite this