PHOSPHOR, PROCESS FOR PRODUCING THE SAME, AND LUMINESCENT DEVICE

文件类型：PDF文档
文件大小：344K
The application relates to a manufacturing method of a phosphor comprising : an oxygen content reduction step of reducing oxygen content and increasing nitrogen content in oxynitride phosphor powder having a ²-type Si 3 N 4 crystal structure including Eu by heat-treating the powder in a reduction-nitridation atmosphere and a manufacturing method of a phosphor comprising : heat-treating silicon nitride raw powder in a reduction-nitridation atmosphere; adding raw powder containing at least Eu and Al to the treated powder in which oxygen content is reduced during the heat treatment; and firing the powder at a temperature of 2200 °C or lower after the addition.