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Abstract Eu3+-activated Na1-xKxBaY(BO3)2 (x = 0.1–1.0) phosphor was prepared via facile solid-state reaction ceramic method. The structural Rietveld refinements were completed to confirm the phase formations. The luminescence properties were reported such… Click to show full abstract
Abstract Eu3+-activated Na1-xKxBaY(BO3)2 (x = 0.1–1.0) phosphor was prepared via facile solid-state reaction ceramic method. The structural Rietveld refinements were completed to confirm the phase formations. The luminescence properties were reported such as photoluminescence excitation (PLE) and emission (PL) spectra, decay lifetime, experimental quantum efficiency (QE) and thermal stabilities. The phase formations and the luminescence properties of the phosphors have a dependence on the K+-substituting for Na+ in the lattices. The results showed that Na1-xKxBaY0.5Eu0.5(BO3)2 (x = 0.1–1.0) phosphors formed the trigonal NaBaY(BO3)2 single phase (Na-phase, space-group of R-3, No.148). Increasing the K+-substituting for Na+ (x ≤ 0.3) induced the appearance of KBaY(BO3)2 phase (K-phase, space-group of R-3 m, No. 166) together with the Na-phase (0.3
Journal Title: Journal of Luminescence
Year Published: 2019
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