Spherical precursors to phosphors are reported that lead to fired materials of 1–5 μm in size with the majority of particles below 4 μm. The photoluminescence performance of the phosphors prepared by this method is as good as those of commercial phosphors, where the average size particle has a volume nine times greater than those reported here. The excitation and emission spectra for are presented. The origins of the emission in are briefly discussed.
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Newport et al. (2000) studied this question.
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