BLUE-EMITTING PHOSPHORS FOR LONG-MIDDLE ULTRAVIOLET RAY AND THEIR PRODUCTION METHOD

摘要

The present invention relates to a blue phosphor, and a manufacturing method of the phase as a main phase or orthoclase (orthoclase) the α- cristobalite (α-cristobalite), Specifically, the _{Na 2 O · K 2 O ·} Al 2 O 3 · SiO 2 Europium (Eu) or cerium (Ce) is added as an activator to the parent-based composition, and cerium (Ce), dysprosium (Dy), samarium (Sm), ruthenium (Lu), thulium (Tm), Pr, Nb, Adding at least one element selected from the group consisting of Tb and Er as a deactivator, or at least one element selected from the group consisting of Ba, Ca, Sr, Mg, Li, Ge, B, Fe, Cu, Mn and Cr and intraday blue for wavelength ultraviolet phosphor was added to the matrix, wherein the _{Na 2 O · K 2 O ·} Al 2 O 3 compound to the SiO ₂ in the matrix is an alkaline or alkaline and natural alkali feldspar powder containing potassium, or nitrate, Acetates, chlorides, oxides and carbonates made from one or more selected mixtures from the group It is a method for producing a blue phosphor for long-wavelength ultraviolet light, characterized in that.;Blue Fluorescent, Ultraviolet, Light Emitting Device