UV-sensitized Sm3+ visible and near-IR photoluminescence in phosphate glass melted with multi-wall carbon nanotubes

José A. Jiménez, Mariana Sendova

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Phosphate glass doped with Sm3+ ions was prepared by melting in ambient atmosphere with multi-wall carbon nanotubes (MWCNTs) added to batch materials to evaluate their impact on material optical properties. An enhanced UV transparency occurs similar to that of a glass melted just with MWCNTs. However, the glass melted only with MWCNT shows evidence of carbon-related luminescent defects, whereas the luminescence of these becomes suppressed in the Sm3+-doped glass melted with the MWCNTs. A comparison with the photoluminescence (PL) of a Sm3+-doped reference (i.e., not melted with MWCNTs) shows that addition of MWCNTs produces an improvement in Sm3+ PL in the visible and near-IR regions. The enhanced PL is observed for resonant excitation in the UV and non-resonantly under 300 nm excitation. It is suggested that the reduced host absorption contributes to the improved PL for resonant excitation of Sm3+ in the UV, while the non-resonant pathway may be related to an energy transfer from the luminescent defects produced in the host. It is the first time to our knowledge that this type of sensitized emission is reported.

Original languageEnglish (US)
Pages (from-to)455-460
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume498
DOIs
StatePublished - Oct 15 2018
Externally publishedYes

Keywords

  • Luminescence
  • Optical properties
  • Rare earths

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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