Peculiarities of intrinsic luminescence excited by pulsed electron beam in CsI and CsI: CO3

V. Yakovlev, L. Trefilova, A. Lebedynskiy, A. Karnaukhova, V. Alekseev

Research output: Contribution to journalArticle

Abstract

The spectra and decay kinetics of STE luminescence arising under a pulsed electron beam (Еex=0.25 MeV, t1/2=15 ns, W=3 mJ/cm2) in CsI and CsI:8.3·10–3CO3 mol% within a temperature range of 80 K÷ 450 K, are examined. It is found that carbonate ions cause a drastic shortening of the intrinsic luminescence decay time at room temperature. The observed distinction in the UV-luminescence decay kinetics of CsI and CsI:CO3 is due to different temperature behavior of the decay time τslow in the slow stage of the exponential decay kinetics at temperatures above 200 K. The presented results are interpreted in terms of the existence of “off-center” excitons with different structure morphology in CsI lattice.

Original languageEnglish
Pages (from-to)267-271
Number of pages5
JournalJournal of Luminescence
Volume190
DOIs
Publication statusPublished - 1 Oct 2017

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ASJC Scopus subject areas

  • Biophysics
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Condensed Matter Physics

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