Synthesis and Optical Characterization of Red-Emitting BaTa2O6:Eu(3+) Phosphors.
Undoped and Eu(3+) doped BaTa2O6 phosphors were synthesized via solid state reaction method and characterized by using XRD, SEM-EDS and photoluminescence (PL) analyses. The XRD results revealed that the crystal structure of BaTa2O6 allowed up to 10 mol% levels of Eu(3+) ions due to the TTB characteristic network of adjacent octahedrals. SEM-EDS analyses confirmed the formation of BaTa2O6 structure and EuTaO4 secondary phase. BaTa2O6:Eu(3+) phosphors exhibited orange and red emissions at 592.2 nm and 615.7 nm in the visible region respectively. The Commission Internationale d'Eclairage (CIE) chromaticity coordinates of the BaTa2O6:Eu(3+) phosphors that excited at λ ex = 400 nm ranged from orangish-red to pinkish-red depending on increasing Eu(3+) concentration.
Department of Metallurgical and Materials Engineering, Marmara University, Göztepe Kampüsü, Kadıköy, 34722, İstanbul, Turkey. mustafa.ilhan@marmara.edu.tr.
Mustafa
M
İlhan
Department of Chemistry, Marmara University, Göztepe Kampüsü, Kadıköy, 34722, İstanbul, Turkey.
Mete Kaan
MK
Ekmekçi
Department of Metallurgical and Materials Engineering, Marmara University, Göztepe Kampüsü, Kadıköy, 34722, İstanbul, Turkey.
Ayhan
A
Mergen
Department of Metallurgical and Materials Engineering, Yıldız Technical University, Davutpaşa Kampüsü, 34220, Esenler, İstanbul, Turkey.
Cemalettin
C
Yaman
BaTa2O6; Eu3+; Phosphors; Photoluminescence; TTB