Persistent luminescence upconversion for Er2O3 under 975 nm excitation in vacuum

Jiwei Wang, Jianhua Hao, Peter A. Tanner

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

The 975 nm excited emission of Er2O3 in the infrared (IR) and visible spectral regions at powers below the threshold for broadband white light generation has been investigated. In this regime the log(emission intensity) vs log(power) plots for emission at 660 nm and 154 nm exhibit slopes for the sample in air (vacuum) of ∼1 (∼5) and ∼1 (∼2), respectively and the excitation mechanisms are discussed. The build-up of the emission is on the timescale of seconds and the excitation and decay transients have been recorded and analyzed for various excitation powers. The decay of the IR and visible emission each follow biexponential processes on a second timescale. The duration and kinetics of the emission decay are characteristic of persistent luminescence.
Original languageEnglish
Pages (from-to)116-122
Number of pages7
JournalJournal of Luminescence
Volume164
DOIs
Publication statusPublished - 1 Aug 2015

Keywords

  • Er<sup>3+</sup>
  • Infrared emission
  • Persistent luminescence
  • Thermo-optical processes
  • Upconversion

ASJC Scopus subject areas

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

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