FLUORESCENT MATERIAL, LIGHT-EMITTING DEVICE, PLANAR LIGHT-SOURCE DEVICE, DISPLAY DEVICE AND LIGHTING DEVICE

摘要

The present invention relates to a fluorescent material, a light-emitting device, a planar light-source device, a display device and a lighting device; and provided is a fluorescent material which has an alpha type Si3N4 crystal structure and comprises an oxynitride represented by the compositional formula CaxEuyMzSi12-(m+n)Aln+mOnN16-n, where M is at least one element selected from the group consisting of Sr, Lu, La and Ba, and where 0.5 = x = 1.1, 0.00005 = y = 0.09, 1.0 = m = 3.6, 0.001 = n = 0.2 and 0.00001 = z = 0.1.