Abstract:
Novel green phosphors are disclosed having the comprise silicate-based compounds having the formula (Sr,A1)x(Si,A2)(O,A3)2+x:Eu2+, where A1 is at least one divalent cation (a 2+ ion) including Mg, Ca, Ba, or Zn, or a combination of 1+ and 3+cations; A2 is a 3+, 4+, or 5+cation, including at least one of B, Al, Ga, C, Ge, N, and P; A3 is a 1-, 2-, or 3-anion, including F, Cl, Br, and S; and x is any value between 1.5 and 2.5, both inclusive. The formula is written to indicate that the A1 cation replaces Sr; the A2 cation replaces Si, and the A3 anion replaces O. These green phosphors are configured to emit visible light having a peak emission wavelength greater than about 480 nm. They have applications in green illumination systems, red-green-blue backlighting systems, white LEDs, and plasma display panels (PDPs).
Abstract:
Novel green phosphors are disclosed having the comprise silicate-based compounds having the formula (Sr,A1)x(Si,A2)(O,A3)2+x:Eu2+, where A1 is at least one divalent cation (a 2+ ion) including Mg, Ca, Ba, or Zn, or a combination of 1+ and 3+ cations; A2 is a 3+, 4+, or 5+ cation, including at least one of B, Al, Ga, C, Ge, N, and P; A3 is a 1−, 2−, or 3− anion, including F, Cl, Br, and S; and x is any value between 1.5 and 2.5, both inclusive. The formula is written to indicate that the A1 cation replaces Sr; the A2 cation replaces Si, and the A3 anion replaces O. These green phosphors are configured to emit visible light having a peak emission wavelength greater than about 480 nm. They have applications in green illumination systems, red-green-blue backlighting systems, white LEDs, and plasma display panels (PDPs).
Abstract:
Disclosed herein are camera-based x-ray digital image detectors that contain an assembly of a scintillator screen, a wide-angle optical lens or fisheye lens, and a digital image sensor. Images formed by x-ray radiation on the scintillator screen are projected onto a much smaller area image sensor through a fisheye or super-wide-angle optical lens, hence forming a highly distorted image thereon. Transparent lead-contained glasses or plastics are utilized to shield image sensor from x-ray damage. Imaging distortion and light falloff caused by the lens optics are corrected by software algorithms. Sub-millimeter resolution may be achieved with reduced design complexity and substantially lower manufacturing costs.
Abstract:
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
Abstract translation: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
Abstract:
Disclosed herein are cerium doped, garnet phosphors emitting in the yellow region of the spectrum, and having the general formula (Y,A)3(Al,B)5(O,C)12:Ce3+, where A is Tb, Gd, Sm, La, Sr, Ba, Ca, and/or Mg, and substitutes for Y, B is Si, Ge, B, P, and/or Ga, and substitutes for Al, and C is F, Cl, N, and/or S, where C substitutes for O. Relative to a solid-state-reaction method, the instant co-precipitation methods provide a more homogeneous mixing environment to enhance the distribution of the Ce3+ activator in the YAG matrix. Such a uniform distribution has the benefit of an increased emission intensity. The primary particle size of the as-prepared phosphor is about 200 nm, with a narrow distribution.
Abstract:
This invention provides methods and systems to prepare replicate arrays from master arrays of liquid solutions. Replicate arrays of liquid solutions can be reacted to form product solid inorganic material arrays for analysis and selection of optimum processes and products with desirable properties.
Abstract:
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
Abstract translation: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
Abstract:
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
Abstract translation: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
Abstract:
Disclosed herein are cerium doped, garnet phosphors emitting in the yellow region of the spectrum, and having the general formula (Y,A)3(Al,B)5(O,C)12:Ce3+, where A is Tb, Gd, Sm, La, Sr, Ba, Ca, and/or Mg, and substitutes for Y, B is Si, Ge, B, P, and/or Ga, and substitutes for Al, and C is F, Cl, N, and/or S, where C substitutes for O. Relative to a solid-state-reaction method, the instant co-precipitation methods provide a more homogeneous mixing environment to enhance the distribution of the Ce3+ activator in the YAG matrix. Such a uniform distribution has the benefit of an increased emission intensity. The primary particle size of the as-prepared phosphor is about 200 nm, with a narrow distribution.