Luminescence life time and time-resolved spectroscopy of Cr3+ ions in strontium barium niobate

T P J Han, F Jaque, D Jaque, J Garcia-Sole, L Ivleva

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6 Citations (Scopus)

Abstract

This paper reports on the photo-luminescence spectroscopic results of congruent strontium-barium-mobate (SBN) crystals doped with Cr2O, at cryogenic temperature (20 K). The experimental results reveal the need of re-assignment of the Cr3+ ions defect centres in this material. For first time, a broad emission band in the near infrared region centred at ca. 950 nm is reported. This emission band has micro-seconds decaytime constant and a band-width full-width at half-maximum (FWHM) larger than 1700 cm(-1) and has been ascribed to the vibronically assisted T-4(2) -> (4)A(2) transition. A much narrower emission band centred at ca. 764 nm with milli-seconds decaytime constant and a FWHM band-width of ca. 170 cm(-1) is correlated to the E-2 -> (4)A(2) radiative transition (R-line). (c) 2006 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)453-456
Number of pages4
JournalJournal of Luminescence
Volume119
DOIs
Publication statusPublished - 2006

Keywords

  • crystals
  • luminescence
  • photoluminescence
  • congruent

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