Photoluminescence Investigation of Tb Doped Yb2O3 Phosphors Produced by Precipitation Method

Authors : Fatma UNAL

Pages : 1031-1036

Doi:10.16984/saufenbilder.895402

View : 26 | Download : 11

Publication Date : 2021-08-30

Article Type : Research Paper

Abstract :Un-doped and Tb doped ytterbium oxide insert ignore into journalissuearticles values(Yb 2 O 3 :Tb 3+ ); particles with different dopant rates insert ignore into journalissuearticles values(2, 4, 6 and 8 at. %); were produced by precipitation method, subsequently by calcination at 1000 °C for 2 h. The crystal structure of all the particles had cubic Yb 2 O 3 structure. The presence of Tb ion in Yb 2 O 3 host structure has been proven from the XRD results. The crystal structure expanded compared to un-doped Yb 2 O 3 particles with the dopant addition confirming lattice parameter insert ignore into journalissuearticles values(LP); values. LP and crystallite size insert ignore into journalissuearticles values(CS); values were in the range of 10.428 – 10.596 Å and 16 – 25 nm, respectively. Only one sharp peak was observed at 506 nm corresponding to 5 D 4 – 7 F 6 transition insert ignore into journalissuearticles values(green emission); from photoluminescence insert ignore into journalissuearticles values(PL); spectra of the phosphor particles. The PL emission intensities were strongly dependent on both CS and dopant rate. However, the dopant rate was more effective on the PL intensity than the CS.
Keywords : Terbium doped ytterbium oxide phosphors, photoluminescence emission, precipitation method, Williamson Hall analysis