Low-velocity electron excited phosphor

摘要

A low-velocity electron excited phosphor having a composition represented by a general formula ZnOx(Alx, Ga1-x)2O3:Mn, wherein X=0.001 to 0.3 mol. A content of Al in the phosphor is set be to within a range between 0.001 mol and 0.3 mol. The range permits a variation in luminance of the phosphor to be within +/-30% and initial luminance of the phosphor to be significantly increased, resulting in the phosphor being suitable for use for a fluorescent display device.