OXIDE PHOSPHOR, LIGHT-EMITTING DEVICE, AND METHOD FOR PRODUCING OXIDE PHOSPHOR

• Main Author: MURASAKI YOSHINORI
• Format: Patent
• Language: English; Japanese
• Published: 19.06.2024
• 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

To provide an oxide phosphor having a light emission peak in a wavelength range from red light to near-infrared light.SOLUTION: An oxide phosphor has a composition represented by Formula (1): (Li1-uM1u)2M2vM3wOx: Cry, M4z (1), wherein M1 is at least one element selected from the group consisting of Na, K, Rb and Cs; M2 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn; M3 is at least one element selected from the group consisting of Si, Ge, Ti, Zr, Sn, and Hf; M4 is at least one element selected from the group consisting of Ni, Eu, Fe, Mn, Nd, Tm, Ho, Er, and Yb; and u, v, w, x, y, and z satisfy 0≤u≤1.0, 1≤v≤3.0, 2.5≤w≤6, 4≤x≤16, 0.005≤y≤1.0, and 0≤z≤0.5, respectively.SELECTED DRAWING: Figure 4 【課題】赤色光から近赤外光の波長範囲に発光ピークを有する酸化物蛍光体を提供する。【解決手段】下記式（１）で表される組成を有する、酸化物蛍光体。（Ｌｉ１－ｕＭ１ｕ）２Ｍ２ｖＭ３ｗＯｘ：Ｃｒｙ，Ｍ４ｚ（１）（前記式（１）中、Ｍ１は、Ｎａ、Ｋ、Ｒｂ及びＣｓからなる群から選択される少なくとも１種の元素であり、Ｍ２は、Ｍｇ，Ｃａ，Ｓｒ，Ｂａ及びＺｎからなる群から選択される少なくとも１種の元素であり、Ｍ３は、Ｓｉ、Ｇｅ、Ｔｉ、Ｚｒ、Ｓｎ及びＨｆからなる群から選択される少なくとも１種の元素であり、Ｍ４はＮｉ，Ｅｕ，Ｆｅ，Ｍｎ，Ｎｄ，Ｔｍ，Ｈｏ，Ｅｒ及びＹｂからなる群から選択される少なくとも１種の元素ｕ、ｖ、ｗ、ｘ、ｙ及びｚは、それぞれ０≦ｕ≦１．０、１≦ｖ≦３．０、２．５≦ｗ≦６、４≦ｘ≦１６、０．００５≦ｙ≦１．０、０≦ｚ≦０．５を満たす。）【選択図】図４