Metalurgija, Vol. 54 No. 2, 2015.
Prethodno priopćenje
Photoluminescence and concentration quenching of Pr3+ doped BaTa2O6 phosphor
M. Ilhan
; Engineering Faculty, Marmara University, İstanbul,Turkey
R. Samur
; Faculty of Technical Education, Marmara University, İstanbul,Turkey
H. Demirer
; Technology Faculty, Marmara University, İstanbul,Turkey
F. Mindivan
; S. E. University, Bilecik, Turkey
Sažetak
The pure and Pr3+ doped TTB-BaTa2O6 phosphors were obtained by the solid state reaction method at 1 425 °C for 20hours. X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM) analyses confirmed a single phase of BaTa2O6up to 10 mol % Pr2O36. SEM analysis also shows that BaTa2O6 grain size decreased with the increasing Pr2O36 concentration.The chemical composition of Pr3+ doped BaTa2O6 structures was confirmed by Energy Dispersive Spectroscopy(EDS) analysis. BaTa2O6:Pr3+ phosphors exhibited on a strong red emission at 620,9 nm, a green emission at 548,3 nm and a red emission at 655,2 nm. Emission intensity increased with Pr3+ doping concentration up to 1,5 mol %, then decreased due to concentration quenching.
Ključne riječi
BaTa<sub>2</sub>O<sub>6</sub>; TTB; Pr<sup>3+</sup>; phosphors; solid state reaction
Hrčak ID:
128974
URI
Datum izdavanja:
1.4.2015.
Posjeta: 1.800 *