Tm3+-Doped y2O3 nanocrystals: Rapid hydrothermal synthesis and luminescence

Murukanahally Kempaiah Devaraju, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Tm3+-doped Y2O3 nanocrystals were prepared via hydrothermal conditions at high autogenous pressure (ca. 40 MPa) using batch reactors at 220 and 250°C for very short periods of reaction time (10 min). The as-prepared materials were identified as Y(OH)3 nanoparticles. The precursor materials with two types of morphologies, such as sphere and rodshaped particles were prepared at 220 and 250°C within 10 min. The sizes of the as-prepared sphere particles are 10-15 nm in diameter, whereas the rod-shaped particles show 15-20 nm in diameter and 0.1-0.2 μm in lengths. The precursor materials were calcined at 500 and 800°C for 5 h in air to obtain (3 mol-%) Tm3+-doped Y2O3 nanocrystals. For the characterization, XRD, FESEM, EDS and TG-DTA were employed. The photoluminescence spectra of sphere and rodshaped particles show higher blue emission at 450 nm than the reference sample.

Original languageEnglish
Pages (from-to)4441-4445
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number29-30
DOIs
Publication statusPublished - 2009

Keywords

  • Hydrothermal synthesis /
  • Lanthanides /
  • Luminescence /
  • Nanostructures /
  • Thulium /
  • Yttrium

ASJC Scopus subject areas

  • Inorganic Chemistry

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