摘要:
Novel phosphor systems are disclosed having the formula A2SiO4:Eu2+D, where A is at least one of a divalent metal selected from the group consisting of Sr, Ca, Ba, Mg, Zn, and Cd; and D is a dopant selected from the group consisting of F, Cl, Br, I, P, S and N. In one embodiment, the novel phosphor has the formula (Sr1-x-yBaxMy)2SiO4:Eu2+F (where M is one of Ca, Mg, Zn, or Cd in an amount ranging from 0
摘要:
Composition for a solid state material, in bulk and in thin film form, that provides relatively high dielectric permittivity that is tunable with variable electrical field bias, relatively low loss tangent and low leakage current for microwave applications. In a first embodiment, the material is BaySr1−yTi1−xMxO3, where M is a substance or mixture including one or more elements drawn from a group consisting of Ta, Zr, Hf, V, Nb, Al, Ga, Cr, Mo, W, Mn, Sc and Re, and the indices x and y satisfy 0≦x≦1 and 0≦y≦1. A preferred choice is M=Ta, V, W, Mo and/or Nb. In a second embodiment, the material is BaySr1−yTi1−x−zTaxMzO3, where M is a substance or mixture including one or more trivalent elements drawn from a group consisting of Al, Ga and Cr and the indices x, y and z satisfy 0≦x+z≦1 and 0≦y≦1.
摘要翻译:用于固体材料的体积和薄膜形式的组合物,其提供相对高的介电常数,其可变电场偏置可调,微波应用的相对低的损耗角正切和低泄漏电流。 在第一实施方案中,材料是BaySr1-yTi1-xMxO3,其中M是包含从由Ta,Zr,Hf,V,Nb,Al,Ga,Cr,Mo组成的组中的一种或多种元素的物质或混合物, W,Mn,Sc和Re,并且指数x和y满足0 <= x <= 1且0 <= y <= 1。 优选的选择是M = Ta,V,W,Mo和/或Nb。 在第二实施方案中,材料是BaySr1-yTi1-x-zTaxMzO3,其中M是包含从Al,Ga和Cr组成的组中绘制的一种或多种三价元素的物质或混合物,并且指数x,y和z满足0 <= x + z <= 1,0 <= Y&LE; 1。
摘要:
Novel phosphor systems are disclosed having the formula A2SiO4:Eu2+D, where A is at least one of a divalent metal selected from the group consisting of Sr, Ca, Ba, Mg, Zn, and Cd; and D is a dopant selected from the group consisting of F, Cl, Br, I, P, S, N, and B. In one embodiment, the novel phosphor has the formula (Sr1−x−yBaxMy)2SiO4:Eu2+F (where M is one of Ca, Mg, Zn, or Cd in an amount ranging from 0
摘要:
Novel aluminate-based green phosphors are disclosed having the formula M1−xEuxAlyO1+3y/2, where M is at least one of a divalent metal selected from the group consisting of Ba, Sr, Ca, Mg, Mn, Zu, Cu, Cd, Sm, and Tm; 0.1
摘要:
Embodiments of the present invention are directed to compositions and processing methods of rare-earth vanadate based materials that have high emission efficiency in a wavelength range of 480 to 700 nm with the maximum intensity at 535 nm (bright yellow) under UV, X-ray and other forms of high-energy irradiation. Embodiments of the present invention are directed to general chemical compositions of the form (Gd1-xAx)(V1-yBy)(O4-zCz), where A is selected from the group consisting of Bi, Tl, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu for 0
摘要翻译:本发明的实施方案涉及在480nm至700nm的波长范围内具有高发射效率且在UV,X射线下具有最大强度为535nm(亮黄色)的稀土类钒酸盐基材料的组合物和加工方法 和其他形式的高能辐射。 本发明的实施方案涉及以下形式的一般化学组成:(1-x A 1 x X)(V 1 -Y B) 其中A选自由Bi,Tl,Y,La,Ce组成的组,其中A选自Bi,Y 1,Y 2,Z 3, Pr,Nd,Pm,Sm,Eu,Tb,Dy,Ho,Er,Tm,Yb和Lu为0
摘要:
Embodiments of the present invention are directed in general to novel aluminate-blue phosphors. Specifically, embodiments of the present invention are directed to use of the novel aluminate-based blue phosphors in white light illumination systems, and in display applications such as back lighting in liquid crystal displays (LCD's) and plasma display panels (PDPs). Embodiments of the present invention are further directed toward aluminate-based phosphors having the general formula (M1−xEux)2−zMgzAlyO[1+(3/2)y], where M is a divalent alkaline earth metal other than magnesium (Mg) from group IIA of the periodic table, where 0.05
摘要翻译:本发明的实施方案一般涉及新型的铝酸盐 - 蓝色荧光体。 具体地,本发明的实施方案涉及在白光照明系统中以及液晶显示器(LCD)和等离子体显示面板(PDP)中的背光照明等显示应用中使用新型铝酸盐系蓝色荧光体。 本发明的实施方案进一步涉及具有以下通式的铝酸盐基荧光体:(M 1-x O 2 x 2)2-z Mg 其中M是镁(Mg)以外的二价碱土金属, 来自周期表的IIA族,其中0.05
摘要:
Embodiments of the present invention are directed to compositions and processing methods of rare-earth vanadate based materials that have high emission efficiency in a wavelength range of 480 to 700 nm with the maximum intensity at 535 nm (bright yellow) under UV, X-ray and other forms of high-energy irradiation. Embodiments of the present invention are directed to general chemical compositions of the form (Gd1-xAx)(V1-yBy)(O4-zCz), where A is selected from the group consisting of Bi, Ti, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu for 0
摘要翻译:本发明的实施方案涉及在480nm至700nm的波长范围内具有高发射效率且在UV,X射线下具有最大强度为535nm(亮黄色)的稀土类钒酸盐基材料的组合物和加工方法 和其他形式的高能辐射。 本发明的实施方案涉及以下形式的一般化学组成:(1-x A 1 x X)(V 1 -Y B) 其中A选自由Bi,Ti,Y,La,Ce组成的组,其中A选自Bi,Ti,Y,La,Ce, Pr,Nd,Pm,Sm,Eu,Tb,Dy,Ho,Er,Tm,Yb和Lu为0
摘要:
Novel phosphor systems for a white LED are disclosed. The phosphor systems are excited by a non-visible to near-UV radiation source having an excitation wavelength ranging from about 250 to 420 nm. The phosphor system may comprise one phosphor, two phosphors, and may include optionally a third and even a fourth phosphor. In one embodiment of the present invention, the phosphor is a two phosphor system having a blue phosphor and a yellow phosphor, wherein the long wavelength end of the blue phosphor is substantially the same wavelength as the short wavelength end of the yellow phosphor. Alternatively, there may be a wavelength gap between the yellow and blue phosphors. The yellow phosphor may be phosphate or silicate-based, and the blue phosphor may be silicate or aluminate-based. Single phosphor systems excited by non-visible radiation are also disclosed. In other embodiments of present invention, a single phosphor is used to produce white light illumination, the single phosphor having a broad emission spectrum with a peak intensity ranging from about 520 to 560 nm.