Synthesis and photoluminescence properties of Ho 3+ doped LaAlO 3 nanoparticles

Hong Ha Thi Vu, Timur Sh Atabaev, Hyung Kook Kim, Yoon Hwae Hwang

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Nanosized particles with different Ho 3+ concentrations were synthesized in LaAlO 3 lattices using a simple Pechini-type sol-gel method. X-ray diffraction measurements were used to investigate the structural composition and the effects of holmium dopant concentration on LaAlO 3:Ho 3+ crystal formation. Field-emission scanning-electron microscopy images con?rm the formation of approximately spherical particles with an average size about 100 nm. The photoluminescence results yielded optimal holmium ion concentration in LaAlO 3 host matrices was about 3% in mol equivalent. The mechanism that are responsible for the photoluminescence emission processes discussed with the help of Ho 3+ -ion Dieke energy level diagram. Power dependent slope measurements were performed to identify up-conversion photoluminescence process involved in LaAlO 3:Ho 3+.

Original languageEnglish
Pages (from-to)5847-5851
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number7
DOIs
Publication statusPublished - Jul 2012
Externally publishedYes

Keywords

  • LaAlO
  • Nanoparticles
  • Perovskite Structure
  • Phosphor

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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