Red-fluorescent substance

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Abstract

The red fluorescent material is obtained by mixing 4.8 g europium oxide (Eu2O3), 60 g sodium carbonate (Na2CO3), 15 g potassium phophate (K3PO4) and 40 g S with 100 g yttrium oxide (Y2O3), firing the mixture in the alumina pot furnace, and adhering 0.02-0.038 % red pigment (Fe2O3) to the fluorescent material. The red fluorescent material is used for the mfr. of color braun tube, and has an improved red luminance and chromaticity.
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