Time-resolved and excitation-emission matrix luminescence behaviour of boro-silicate glasses doped with Eu3+ ions for red luminescent application

Research output: Contribution to journalArticlepeer-review

Authors

  • G. Hungerford
  • J. D. Santos
  • B. M. Walsh
  • L. Di Silvio

Colleges, School and Institutes

External organisations

  • HORIBA Jobin Yvon IBH Ltd
  • Universidade do Porto
  • NASA Langley Research Center
  • King's College London

Abstract

This paper reports the time-resolved luminescence and excitation-emission matrix (EEM) measurements of three different boro-silicate host glasses doped with Eu3+. The effect of zinc and tellurium oxide addition on the photoluminescence (PL) and time-resolved emission spectra (TRES) of the glasses was also studied. At 392 nm of excitation wavelength, a bright red electric dipole (ED) transition 5D07F2 (615 nm) and a weak orange magnetic dipole (MD) transition 5D07F1 (590 nm) were observed. The asymmetric ratio (ED/MD) values were increased in the order Eu < Eu-Zn < Eu-Te. The decay associated spectra (DAS) showed a bright red emission transition (5D07F2) at 612 nm for all glasses. The time-resolved analysis revealed that, because of the glass network randomness, the luminescence emissions did not present the same lifetime or wavelength for the same transition bands, attributed to different environments (or interactions) experienced by Eu3+ ions in the glass network.

Bibliographic note

Funding Information: SHN and AS would like to thank the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie in grant agreement No. 753636 . Funding Information: SHN and AS would like to thank the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie in grant agreement No. 753636. Publisher Copyright: © 2021

Details

Original languageEnglish
Article number111340
Number of pages7
JournalMaterials Research Bulletin
Volume140
Early online date3 Apr 2021
Publication statusE-pub ahead of print - 3 Apr 2021

Keywords

  • Boro-silicates, Europium oxide doped glasses, Excitation-emission matrix, Time-resolved luminescence