摘要:
The invention provides phosphors composed of EuMg(1-x)MaxMb10O17, wherein Ma is Mn, Zn, or combinations thereof, Mb is Al, Ga, B, In, or combinations thereof, and O
摘要:
Provided are a ZnO-based substrate having a surface suitable for crystal growth, and a method of manufacturing the ZnO-based substrate. The ZnO-based substrate is made in a way that almost no hydroxide groups exist on a crystal growth-side surface of a MgxZn1-xO substrate (0≦x
摘要翻译:提供具有适合于晶体生长的表面的ZnO系基板以及ZnO系基板的制造方法。 ZnO基基板的制作方式是在Mg x Zn 1-x O基板的晶体生长侧表面上几乎不存在氢氧根基团(0&lt; nlE; x <1)。 为此,作为处理基板的方法,在MgxZn1-xO基板的晶体生长侧表面(0&amp; nlE; x <1)上的最终处理是在pH3以下的酸性湿法蚀刻。 由此,可以防止生成Zn的氢氧化物,降低在ZnO系基板上形成的薄膜中的晶体缺陷的密度。
摘要:
A red light-emitting phosphor capable of emitting red light upon excitation with light having a wavelength of 350 to 420 nm, represented by the following compositional formula (1): A(1-x)Eu(1-x-y)LnyD2xM2O8 (1) wherein A is at least one element selected from the group consisting of Li, Na, K, Rb and Cs, Ln is at least one element selected from rare earth elements including Y but excluding Eu, D is at least one element selected from the group consisting of Mg, Ca, Sr and Ba, M is at least one element selected from Mo and W, x is a positive number satisfying 0
摘要:
The invention relates to a phosphor element which consists of natural and/or synthetic flake-form substrates, such as mica, corundum, silica, glass, ZrO2 or TiO2, and at least one phosphor, to the production thereof, and to the use thereof as LED conversion phosphor for white LEDs or so-called colour-on-demand applications.
摘要:
A fluorescent material includes first and second phosphors. The first phosphor is a light-storing phosphor, which is represented by the general formula (M1-a-bEuaQb)Al2O4, wherein M is one type selected from the group consisting of Mg, Ca, Ba, Sr and Zn; Q is one type selected from the group consisting of Pr, Nd, Dy, Er and Ho; a is a number that satisfies 0.0001≦a≦0.5; and b is a number that satisfies 0.010≦b≦0.5. When the fluorescent material is excited for about 15 minutes by ultraviolet irradiation having about 365.0 nm wavelength with an intensity of 0.5 mW/cm2, and the color of the afterglow of the fluorescent material is measured 1 minute and 10 minutes after excitation is terminated, an amount of change between chromaticity measured 1 minute after excitation and that measured 10 minutes is in the range of −0.001≦x≦0.009 and −0.009≦y≦0.006.
摘要翻译:荧光材料包括第一和第二荧光体。 第一荧光体是由通式(M1-a-bEuaQb)Al 2 O 4表示的蓄光荧光体,其中M是选自Mg,Ca,Ba,Sr和Zn中的一种; Q是选自Pr,Nd,Dy,Er和Ho中的一种; a是满足0.0001 <= a <= 0.5的数字; b是满足0.010 <= b <= 0.5的数。 当荧光材料通过具有强度为0.5mW / cm 2的波长约365.0nm的紫外线照射激发大约15分钟时,在激发结束后1分钟和10分钟测量荧光材料的余辉的颜色, 在激发后1分钟测量的色度和测量的10分钟之间的色度之间的变化量在-0.001 <= x <= 0.009和-0.009 <= y <0.006的范围内。
摘要:
The invention is directed to quantum dot nanoparticles and methods of preparation. Using regioselective dendritic functionalized cellulose, quantum dots may be embedded in the modified cellulosic material. The quantum dot nanoparticles provide use for biotechnology or biomedicinal applications. Photooptical properties and morphology for use in as well as its biocompatibility were investigated.
摘要:
The present invention provides nanoparticles having a core/shell structure consisting of a core comprising a Group III element and a Group V element at a molar ratio of the Group III element to the Group V element in the range of 1.25 to 3.0, and a shell comprising a Group II element and a Group VI element and having a thickness of 0.2 nm to 4 nm, the nanoparticles having a photoluminescence efficiency of 10% or more and a diameter of 2.5 to 10 nm; a method of producing the water-dispersible nanoparticles comprising bringing a dispersion of III-V semiconductor nanoparticles in an organic solvent into contact with an aqueous solution of a Group II element-containing compound and a Group VI element-containing compound to thereby transfer the III-V semiconductor nanoparticles of the organic solvent dispersion to the aqueous solution, and then irradiating the aqueous solution with light; and a method of producing a glass matrix having the nanoparticles dispersed therein.The present invention provides III-V semiconductor nanoparticles having a high photoluminescence efficiency in an aqueous solution, and a method of producing the nanoparticles. The invention further provides a fluorescent material with high PL efficiency containing the III-V semiconductor nanoparticles retained in a glass matrix, a method of producing the fluorescent material, and a light-emitting device containing the fluorescent material.
摘要:
Provided are a photocatalyst which is high in catalytic activity, is nontoxic, has a long life, allows visible light to be used directly for its photocatalytic reaction and is especially useful for hydrogen generation, and a process for producing it. It contains a cadmium compound, has a capsular structure, has an average particle diameter of 100 nm or less and can be manufactured by dropping a solution of a cadmium salt into a solution of a sodium compound or admixing a solution of a sodium compound in a suspension of particles of a cadmium compound.
摘要:
Solid-state scintillating compositions for detecting neutrons comprise a Li4Zn(PO4)2 host lattice. Methods of making scintillating compositions comprise: dissolving a lithium-6 precursor and a zinc precursor in a solvent to form a solution; combining phosphoric acid with the solution; combining a base with the solution to form a precipitate; and heating the precipitate to form a Li4Zn(PO4)2 host lattice.
摘要:
An inorganic phosphor includes: a host material that contains at least one host compound selected from the group consisting of compounds of group 2 element with group 16 element of the periodic table and compounds of group 12 element with group 16 element of the periodic table, or a mixed crystal of the host compound; and a dopant that includes at least one metal element selected from the group consisting of first metal elements belonging to second transition series of from group 6 to group 11 of the periodic table and second metal elements belonging to third transition series of from group 6 to group 11 of the periodic table, and does not include Cu and Mn.