Abstract
AbstractThe red phosphor EuBaB9O16 was prepared by the conventional solid‐state reaction method. The crystallite phase of the phosphor was observed by X‐ray diffraction (XRD) patterns. Scanning electron micrographs were obtained to study the morphologic features and the particle size of the phosphor. The photoluminescence (PL) excitation and emission spectra, temperature dependence of luminescence intensity and the decay curves were investigated. The phosphor, when excited with near‐UV wavelength radiation, exhibited an intense red luminescence. The characteristic emission of Eu3+ ions corresponding to the electric dipole transition 5D0 → 7F2 was located at 613 nm under 254‐ and 365‐nm excitation. Its room temperature fluorescent decay profile exhibits a single‐exponent shape with a decay time of 2.03 ms. The color coordinates were also discussed. In addition, the PL properties of EuBaB9O16 were compared with those of La0.9Eu0.1BaB9O16 and Gd0.9Eu0.1BaB9O16.
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