Manufacturing method of phosphorescent phosphor nanopowder and manufacturing method of fluorescent ceramics using the phosphorescent phosphor nanopowder

摘要

The present invention relates to a method for producing a light-accumulating phosphor nanopowder capable of synthesizing SrAl ₂ O ₄ : Eu ²⁺ , Dy ³⁺ phosphor nano powder in a short time while suppressing a decrease in phosphorescence property by a simple process using a low-cost raw material And a method for producing fluorescent ceramics using the condensed fluorescent nano powder produced thereby. According to the present invention, since the thermal plasma is used, the reaction proceeds at a high temperature, so that the reaction is performed in a short time, no impurities are generated, no subsequent heat treatment is required, the Eu ^2+, Dy ³⁺ phosphor nanopowders: Eu ^2+, Dy ³⁺ to be able to control the growth rate of the phosphor nanopowders _{SrAl 2 O 4: SrAl 2 O} 4 to control the cooling rate of the supply flow rate of the quenching gas It is easy to control the physical properties. In addition, ceramics that require a high-temperature manufacturing process by using ceramics raw materials can emit light by SrAl ₂ O ₄ : Eu ²⁺ , Dy ³⁺ phosphors, thereby enabling to express beauty and high-quality color.