PHOSPHOR AND LIGHT-EMITTING DEVICE USING SAME

• Main Authors: YAMAURA Taiyo, HIROSAKI Naoto, AKABANE Masato, TOYOSHIMA Hiroaki, YOSHIMATSU Ryo
• Format: Patent
• Language: English; French; Japanese
• Published: 03.10.2019
• 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

In order to provide a novel phosphor, this phosphor has an element indicated by Rδ in a solid solution in a phosphor base material crystal indicated by Mα (L, A) βXγ. M is at least one type of element selected from Mg, Ca, Sr, Ba, and Zn. L is at least one type of element selected from Li, Na, and K. A is at least one type of element selected from Al, Ga, B, In, Sc, Y, La, and Si. X is at least one type of element selected from O, N, F, and Cl (except when X is only N). R is at least one type of element selected from Mn, Cr, Ti, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, and Yb. α, β, γ, and δ fulfil α + β + γ + δ = 9, 0.00< α ≤ 1.30, 3.70 ≤ β ≤ 4.30, 3.70 ≤ γ ≤ 4.30, and 0.00 < δ ≤ 1.30. La présente invention concerne un nouveau phosphore qui contient un élément noté Rδ en solution solide dans un cristal à base de phosphore noté Mα (L, A) βXγ, où M est au moins un type d'élément choisi parmi Mg, Ca, Sr, Ba, et Zn ; L est au moins un type d'élément choisi parmi Li, Na, et K ; A est au moins un type d'élément choisi parmi Al, Ga, B, In, Sc, Y, La et Si ; X est au moins un type d'élément choisi parmi O, N, F et Cl (sauf quand X est seulement N) ; R est au moins un type d'élément choisi parmi Mn, Cr, Ti, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho et Yb ; et α, β, γ, et δ satisfont les relations α + β + γ + δ = 9, 0,00< α ≤ 1,30, 3,70 ≤ β ≤ 4,30, 3,70 ≤ γ ≤ 4,30, et 0,00 < δ ≤ 1,30. 新規な蛍光体を提供すること。　Ｍα（Ｌ，Ａ）βＸγで表される蛍光体母体結晶に、Ｒδで表される元素が固溶した蛍光体であって、　前記Ｍは、Ｍｇ、Ｃａ、Ｓｒ、Ｂａ及びＺｎから選ばれる１種類又は２種類以上の元素であり、　前記Ｌは、Ｌｉ、Ｎａ及びＫから選ばれる１種類又は２種類以上の元素であり、　前記Ａは、Ａｌ、Ｇａ、Ｂ、Ｉｎ、Ｓｃ、Ｙ、Ｌａ及びＳｉから選ばれる１種類又は２種類以上の元素であり、　前記Ｘは、Ｏ、Ｎ、Ｆ及びＣｌから選ばれる１種類又は２種類以上の元素（ただし、ＸがＮのみであることを除く）であり、　前記Ｒは、Ｍｎ、Ｃｒ、Ｔｉ、Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｔｂ、Ｄｙ、Ｈｏ及びＹｂから選ばれる１種類又は２種類以上の元素であり、　前記α、β、γ及びδが、α＋β＋γ＋δ＝９であり、　０．００＜α≦１．３０、　３．７０≦β≦４．３０、　３．７０≦γ≦４．３０　０．００＜δ≦１．３０、 である蛍光体である。