PREPARATION METHOD OF NANO SIZE RED PHOSPHOR BY MILLING AND CALCINATION OF GEL POWDER OBTAINED BY SOL-GEL METHOD AND HEAT TREATMENT

摘要

A method for preparing a nano-sized red phosphor is provided to prevent agglomeration of particles during a firing step in a liquid process for preparing a red phosphor, thereby realizing a uniform nano-scale particle size. A method for preparing a nano-sized Y2O3:Eu^3+ red phosphor through crushing and firing steps from gel powder obtained by a sol-gel process and heat treatment by using yttrium oxide and europium oxide as starting materials comprises the steps of: providing gel powder by a sol-gel reaction and heat treatment of gel; crushing the gel powder to prepare finely divided gel powder; and firing the finely divided gel powder to obtain a nanosized Y2O3:Eu^3+ red phosphor.