Sm3+ photoluminescence and excited-state dynamics in lithium-barium borate glasses co-doped with CuO

José A. Jiménez

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The effect of CuO co-doping on orange/red-emitting Sm3+-doped borate glasses prepared by melting was investigated by various spectroscopic techniques. The glasses were first characterized by X-ray diffraction and Fourier transform-infrared spectroscopy for basic structural properties. Absorption spectroscopy showed that CuO addition leads to the development of the Cu2+ absorption band around 735 nm. Photoluminescence (PL) spectra obtained for the CuO-free reference glass under 250 nm excitation displayed host-sensitized Sm3+ PL along with intrinsic band emission from the borate host. The CuO doping produced a new contribution to band emission characteristic of Cu+. Further, significant decrease of Sm3+ visible luminescence was evidenced in accord with a quenching effect induced by Cu2+. The analysis of Sm3+ emission decay curves harmonized with the occurrence of two populations of Sm3+ ions (single, interacting). The two decay components showed significant 4G5/2 lifetime decrease with increasing CuO content demonstrating an efficient Sm3+ → Cu2+ energy transfer.

Original languageEnglish (US)
Article number111555
JournalChemical Physics
Volume559
DOIs
StatePublished - Jul 1 2022
Externally publishedYes

Keywords

  • Energy transfer
  • Glasses
  • Luminescence
  • Optical properties
  • Rare earths

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'Sm3+ photoluminescence and excited-state dynamics in lithium-barium borate glasses co-doped with CuO'. Together they form a unique fingerprint.

Cite this