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

BaTa₂O₆; TTB; Pr³⁺; phosphors; solid state reaction

Hrčak ID:

128974

URI

https://hrcak.srce.hr/128974

Datum izdavanja:

1.4.2015.

Posjeta: 1.728 *