Effect of processing parameters on structural, morphological and optical Y2O3:Yb3+/Ho3+ powders characteristics
Samo za registrovane korisnike
Autori
Mančić, Lidija
Lojpur, Vesna

Marinković, Bojan
de Pinho Mauricio, M. H.
Dramićanin, Miroslav

Milošević, Olivera

Članak u časopisu (Objavljena verzija)

Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Rod-like and flake-like up-converting Y2O3:Yb3+/Ho3+ particles which are composed of nanoparticles with size less than 100 nm, are prepared by a simple hydrothermal processing at 473 K (3 h) followed by additional thermal treatment at 1373 K (3 and 12 h). The effect of precursor pH value on the formation of Y2O3:Yb3+/Ho3+ is followed through X-ray powder diffractometry (XRPD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). Structural refinement confirms formation of the cubic bixbyte structure (S.G. Ia-3) with the non-uniform accommodation of dopants at C2 and S6 cationic sites. Under 978 nm laser excitation, strong green (530–570 nm) up-conversion is observed in all samples. The emission shows a decrease in intensity with an increase in external temperature, indicating FIR (fluorescence intensity ratio) based temperature sensing behavior of 0.52% for the 5F4 → 5I8/5S2 → 5I8 transitions.
Ključne reči:
Y2O3:Yb3+ and Ho3+ / Hydrothermal synthesisIzvor:
Advanced Powder Technology, 2014, 25, 5, 1449-1454Izdavač:
- Elsevier
Projekti:
- Racionalni dizajn i sinteza biološki aktivnih i koordinacionih jedinjenja i funkcionalnih materijala, relevantnih u (bio)nanotehnologiji (RS-172035)
- CNPq, Research Productivity Grant
DOI: 10.1016/j.apt.2014.03.015
ISSN: 0921-8831