Sol–gel synthesis, characterization and luminescent properties of Tb3+ doped MLa2O4 (M = Sr or Ba) nanophosphors
作者： Sonika , Sang-Do Han , S.P. Khatkar , Mukesh Kumar , V.B. Taxak
DOI: 10.1016/J.MSEB.2013.09.004
关键词:
摘要: Abstract Tb3+ doped SrLa2O4 and BaLa2O4 nanophosphors were successfully synthesized via tartaric acid assisted sol–gel method their luminescent properties investigated. The crystal structure morphology of SrLa2O4:Tb3+ BaLa2O4:Tb3+ was studied by X-ray diffraction (XRD), scanning electron microscope (SEM) transmission (TEM). Thermal decomposition behavior the dried gels investigated thermogravimetry (TG) differential thermal analysis (TGA). Photoluminescence (PL) behaviors these checked excitation emission spectra. These displayed green color under a UV source due to characteristic transition from 5D4 → 7F5 at 544 nm. dependence photoluminescence intensity on ion concentration, concentration annealing temperature also in detail. In addition, optimum doping time-resolved luminescence spectroscopy
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