| abstract |
The present invention provides a wavelength conversion member and a light-emitting device using the wavelength conversion member with little decrease in luminous intensity over time when irradiated with light from an LED or an LD. The wavelength conversion member is characterized in that it is a wavelength conversion member in which an inorganic phosphor is dispersed in a glass matrix, and the glass matrix contains 30 to 85% of SiO 2 and 4.3 to 20% of B 2 O 3 in mol %. , 0-25% Al 2 O 3 , 0-3% Li 2 O, 0-3% Na 2 O, 0-3% K 2 O, 0-3% Li 2 O+Na 2 O +K 2 O, 0-35% MgO, 0-35% CaO, 0-35% SrO, 0-35% BaO, 0.1-45% MgO+CaO+SrO+BaO, and 0-5 % ZnO, the inorganic phosphor is selected from oxide phosphors, nitride phosphors, oxynitride phosphors, chloride phosphors, acid chloride phosphors, halide phosphors, aluminate phosphors and halophosphoric acids At least one of the salt phosphors. |