摘要:
β-Sialon comprising Eu2+ that is present in a solid solution form in β-sialon represented by Si6-zAlzOzN μm [wherein z is 0.3-1.5], which shows, when excited with light of 450 nm in wavelength, a peak wavelength of fluorescent spectrum of 545-560 nm, a half-value breadth of 55 nm or greater, and an external quantum efficiency of 45% or greater. The β-sialon can be produced by blending at least one kind of oxide selected from aluminum oxide and silicon oxide with silicon nitride and aluminum nitride in such a manner as to give z of 0.3-1.5, further adding thereto a europium compound and a β-sialon powder having an average particle diameter of 5 μm or greater and an average degree of circularity of 0.7 or greater, each in a definite amount, and baking the mixture.
摘要:
β-Sialon comprising Eu2+ that is present in a solid solution form in P-sialon represented by Si6-zAlzOzN μm [wherein z is 0.3-1.5], which shows, when excited with light of 450 nm in wavelength, a peak wavelength of fluorescent spectrum of 545-560 nm, a half-value breadth of 55 nm or greater, and an external quantum efficiency of 45% or greater. The p-sialon can be produced by blending at least one kind of oxide selected from aluminum oxide and silicon oxide with silicon nitride and aluminum nitride in such a manner as to give z of 0.3-1.5, further adding thereto a europium compound and a β-sialon powder having an average particle diameter of 5 μm or greater and an average degree of circularity of 0.7 or greater, each in a definite amount, and baking the mixture.
摘要:
Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles each of which is a β-type SiAlON represented by a general formula: EuaSibAlcOdNe, where 0.005≦a≦0.4, b+c=12, d+e=16, wherein a mean value of a value obtained by dividing a longer particle diameter by a shorter particle diameter is not greater than 1.75. Also provided are a light emitting apparatus using the phosphor particle group in a light converter, and a liquid crystal display television using the light emitting apparatus. With these, a high-efficiency and stable light emitting apparatus using a β-type SiAlON, and a phosphor particle group therefor are provided.
摘要翻译:提供了二价铕激活的氮氧化物绿色发光荧光体颗粒的荧光体颗粒组,每个都是由通式EuaSibAlcOdNe表示的“SiAlON”,其中0.005和nlE; a≦̸ 0.4,b + c = 12,d + e = 16,其中通过将较长粒径除以更短粒径而获得的值的平均值不大于1.75。 还提供了在光转换器中使用荧光体粒子群的发光装置和使用该发光装置的液晶显示电视机。 利用这些,提供了使用“SiAlON”型的高效稳定的发光装置及其荧光体粒子群。
摘要:
Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor includes, as a main component, α-type sialon represented by a general expression: (M1)x(M2)y(Si,Al)12(O,N)16 (where M1 is one or more types of elements selected from a group consisting of Li, Mg, Ca, Y, and lanthanide element (except for La and Ce) and M2 is one or more types of elements selected from a group consisting of Ce, Pr, Eu, Tb, Yb, and Er, and 0.3≦X+Y≦1.5 and 0
摘要翻译:可以提供使用蓝色LED或紫外线LED作为光源并具有优异发光效率的白色LED的荧光体。 该荧光体作为主要成分,以通式(M1)x(M2)y(Si,Al)12(O,N)16表示的α型赛隆)(其中M1为选择的一种或多种元素 来自由Li,Mg,Ca,Y和镧系元素(La和Ce除外)组成的组,M2是选自Ce,Pr,Eu,Tb,Yb和Er中的一种或多种元素 ,和0.3& NlE; X + Y≦̸ 1.5和0
摘要:
α-sialon phosphor that is α-sialon represented by a general expression: (M)x(Eu)y(Si, Al)12(O, N)16 (where M is one or more types of elements selected from a group consisting of Li, Mg, Ca, and Y as well as lanthanide element (except for La and Ce) and including at least Ca), the α-sialon phosphor being structured so that an oxygen content is 1.2 mass % or less and primary particles constituting the α-sialon have a columnar shape. When the α-sialon phosphor receives ultraviolet rays or visible light having a wavelength from 250 to 500 nm as an excitation source, the α-sialon phosphor shows a fluorescent characteristic having a peak in a wavelength region from 595 to 630 nm.
摘要:
Phosphor that can provide white LED that uses a blue LED or an ultraviolet LED as a light source and that has superior luminous efficiency. This phosphor includes, as a main component, α-type sialon represented by a general expression: (M1)x(M2)y(Si,Al)12(O,N)16 (where M1 is one or more types of elements selected from a group consisting of Li, Mg, Ca, Y, and lanthanide element (except for La and Ce) and M2 is one or more types of elements selected from a group consisting of Ce, Pr, Eu, Tb, Yb, and Er, and 0.3≦X+Y≦1.5 and 0
摘要翻译:可以提供使用蓝色LED或紫外线LED作为光源并具有优异发光效率的白色LED的荧光体。 该荧光体作为主要成分,以通式(M1)x(M2)y(Si,Al)12(O,N)16表示的α型赛隆)(其中M1为选择的一种或多种元素 来自由Li,Mg,Ca,Y和镧系元素(La和Ce除外)组成的组,M2是选自Ce,Pr,Eu,Tb,Yb和Er中的一种或多种元素 ,和0.3& NlE; X + Y≦̸ 1.5和0
摘要:
The present invention provides: a phosphor which can be combined with a blue LED to emit white light having a low color temperature as in the case where the phosphor is used singly, has a broad fluorescence spectrum, high light emission efficiency, and thermal/chemical stability, and rarely undergoes the deterioration in brightness at higher temperatures. This phosphor is represented by the general formula: Mx(Si,Al)2(N,O)3±y (wherein M independently represent Li or at least one alkali earth metal element; and x and y fulfill the requirement represented by the formulae: 0.52≦x≦0.9 and 0≦y≦0.3) wherein some of M are substituted by element Ce, and wherein the Si/Al atomic ratio is 1.5 to 6 inclusive, the O/N atomic ratio is 0 to 0.1 inclusive, 5-50 mol % of M's is Li, and 0.5-10 mol % of M is Ce.
摘要翻译:本发明提供:与单独使用荧光体的情况相同,可以与蓝色LED组合发光色温度低的白光的荧光体具有宽荧光光谱,高发光效率和热/化学 稳定性,并且在较高温度下很少发生亮度劣化。 该荧光体由以下通式表示:Mx(Si,Al)2(N,O)3±y(其中M独立地表示Li或至少一种碱土金属元素; x和y满足式 :0.52 @ x @ 0.9和0 @ y @ 0.3)其中M中的一些被元素Ce取代,并且其中Si / Al原子比为1.5〜6,其中O / N原子比为0〜0.1,其中5 -50摩尔%的M为Li,0.5-10摩尔%的M为Ce。
摘要:
A light-emitting device comprising a light source which emits excitation light and a fluorescent substance which absorbs the excitation light to emit light in combination, wherein a fluorescent substance comprising an α type SiAlON represented by the general formula: (Caα,Euβ)(Si,Al)12(O,N)16 (1.5
摘要:
Provided is a phosphor particle group of divalent europium-activated oxynitride green light emitting phosphor particles (1) each of which is a β-type SiAlON represented by a general formula: EuaSibAlcOdNe, where 0.005≦a≦0.4, b+c=12, d+e=16, wherein a mean value of a value obtained by dividing a longer particle diameter by a shorter particle diameter is not greater than 1.75. Also provided are a light emitting apparatus (11) using the phosphor particle group in a light converter (13), and a liquid crystal display television using the light emitting apparatus (11). With these, a high-efficiency and stable light emitting apparatus using a β-type SiAlON, and a phosphor particle group therefor are provided.
摘要翻译:本发明提供一种二价铕活化氮氧化物绿色发光荧光体颗粒(1)的荧光体粒子群,每一种都是由通式:EuaSibAlcOdNe表示的“SiAlON”,其中0.005≦̸ a≦̸ 0.4,b + c = 12,d + e = 16,其中通过将较长粒径除以更短粒径而获得的值的平均值不大于1.75。 还提供了在光转换器(13)中使用荧光体颗粒群的发光装置(11)和使用该发光装置的液晶显示电视机。 利用这些,提供了使用“SiAlON”型的高效稳定的发光装置及其荧光体粒子群。
摘要:
A β type Sialon fluorescent substance is disclosed that is capable of achieving enhanced brightness of a white light emitting diode using blue to ultraviolet light as a light source. In the fluorescent substance which contains not less than 90% by mass of a β type Sialon composition represented by general formula: Si6-zAlzOzN8-z as a host material wherein z is not less than 0.24 and not more than 0.42, Eu is present dissolved in solid solution as a luminescent center at a content of 0.05 to 0.2% by atom. The β type Sialon fluorescent substance is preferably in the form of a powder having an average particle size of not less than 1 μm and not more than 20 μm. A white LED of good luminescent characteristics can be obtained by using a blue or ultraviolet light emitting diode as a excitation light source in combination with a fluorescent substance that emits yellow or red light.
摘要翻译:A&bgr 公开了能够实现使用蓝色至紫外光作为光源的白色发光二极管的增强亮度的型号赛隆荧光物质。 在含有不少于90质量%的&bgr的荧光物质中, 由通式Si 6-z Al z O z N 8-z表示的Sialon组合物作为主体材料,其中z不小于0.24且不大于0.42,Eu以0.05-0.2%的含量溶解在作为发光中心的固溶体中,Eu以0.05-0.2%的含量存在 原子。 &bgr 赛隆型荧光物质优选为平均粒径为1μm以上且20μm以下的粉末状。 通过使用蓝色或紫外线发光二极管作为激发光源与发出黄色或红色光的荧光物质组合,可以获得良好发光特性的白色LED。