abstract |
A phosphor for a VUV-excited light-emitting device, which has a small decrease in luminance due to heat treatment and plasma exposure, and a VUV-excited light-emitting device using the same. A general formula M 1 M 2 2-a Ca a MgSi 2 O 8 (M 1 in the formula is Ca, 2 or more kinds selected from the group consisting of Sr and Ba or Sr, a Ba, M 2 is Is at least one member selected from the group consisting of Sr and Ba, and a is in the range of more than 0 to 2 or less.) Phosphor. A vacuum ultraviolet ray excited light emitting device using the phosphor described above. [Selection diagram] None |