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 journalArticle

5 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

Fingerprint

Holmium
Nanoparticles
Photoluminescence
holmium
Ions
photoluminescence
nanoparticles
Polymethyl Methacrylate
synthesis
X-Ray Diffraction
Electron Scanning Microscopy
Gels
ion concentration
Field emission
Electron energy levels
Sol-gel process
field emission
energy levels
diagrams
Doping (additives)

Keywords

  • LaAlO
  • Nanoparticles
  • Perovskite Structure
  • Phosphor

ASJC Scopus subject areas

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

Cite this

Synthesis and photoluminescence properties of Ho 3+ doped LaAlO 3 nanoparticles. / Vu, Hong Ha Thi; Atabaev, Timur Sh; Kim, Hyung Kook; Hwang, Yoon Hwae.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 7, 07.2012, p. 5847-5851.

Research output: Contribution to journalArticle

Vu, Hong Ha Thi ; Atabaev, Timur Sh ; Kim, Hyung Kook ; Hwang, Yoon Hwae. / Synthesis and photoluminescence properties of Ho 3+ doped LaAlO 3 nanoparticles. In: Journal of Nanoscience and Nanotechnology. 2012 ; Vol. 12, No. 7. pp. 5847-5851.
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