Performance optimization of Er 3+ doped barium–natrium–yttrium–fluoride phosphor synthesized by the low-temperature combustion synthesis method
Journal of Materials Science: Materials in Electronics(2017)
Abstract
Er 3+ doped barium–natrium–yttrium–fluoride phosphor sensitive to 1550 nm was synthesized and optimized by the low-temperature combustion synthesis (LCS) method, which is the most popular method for the synthesis of oxides and compound oxides, using citric acid as the fuel. Orthogonal experiments were adopted to determine the optimal batch formula. The effect of the amount of citric acid on the phase formation, luminescence intensity and morphology was studied systematically. (NH 4 ) 2 SO 4 was adopted as the dispersing agent to improve the dispersion state of the ultrafine phosphor and the annealing process was studied to enhance its luminescence intensity. The product presents the characteristic emission peaks of Er 3+ and its luminescence mechanism excited at 1550 nm was discussed. This work has made a useful attempt to expand the applicability of LCS method besides the oxides.
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Key words
Luminescence Intensity, Er2O3, Orthogonal Experiment, Upconversion Luminescence, Combustion Heat
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