PHOSPHOR MATERIAL AND LIGHT-EMITTING DEVICE

• Main Authors: INOUE OSAMU, NITTA MITSURU, OKUYAMA KOJIRO, SHIRAISHI SEIGO
• Format: Patent
• Language: English
• Published: 04.06.2015
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; SEMICONDUCTOR DEVICES

A phosphor material according to an embodiment of the present disclosure contains a major component represented by the formula A2-v-w-x-yBvLnwEuxSmyM2-zDzO8, where A is one or more elements selected from the group consisting of alkaline-earth metal elements; B is one or more elements selected from the group consisting of alkali metal elements; Ln is one or more elements selected from the group consisting of rare-earth elements other than Eu and Sm; M is one or more elements selected from the group consisting of W and Mo; D is one or more elements selected from the group consisting of Nb and Ta; and v, w, x, y, and z satisfy the inequalities 0 v 0.5, 0.15 x+y 0.7, 0 y 0.05, and 0<z 1.7 and the equation w+x+y=v+z.