摘要:
The present invention relates to a phosphor comprising a nitride or an oxynitride, comprising an X-ray powder diffraction pattern comprising at least one Region having at least one peak with an intensity ratio I of 8% or less, the X-ray powder diffraction pattern measured in the 2θ range from 10° to 60° using a CuKα line (1.54184 {acute over (Å)}), wherein the Region is the 2θ range from 41.5° to 47°, the intensity of each peak is a value obtained after background correction, and the intensity ratio I is defined by the formula (Ip×100)/Imax(%), where Imax represents the height of the most intense peak present in the 2θ range from 34° to 37° and Ip represents the height of each peak.
摘要:
The present invention provides a plasma display device that has light emission properties with short persistence where green light has a persistence time of 3.5 msec or less, that is excellent in luminance, luminance degradation resistance, and color tone, and that is suitable for, for example, a stereoscopic image display device. The present invention provides a plasma display device including a plasma display panel in which a pair of substrates at least whose front side is transparent are disposed to oppose each other so as to form a discharge space between the substrates, barrier ribs for dividing the discharge space into a plurality of discharge spaces are disposed on at least one substrate, electrode groups are disposed on the substrates so as to produce discharge in the discharge spaces divided with the barrier ribs, and a green phosphor layer that emits light by the discharge is provided, wherein the green phosphor layer includes a mixed phosphor containing a short persistence Mn2+-activated green phosphor with a 1/10 persistence time of more than 2 msec but less than 5 msec and either a Ce3+-activated green phosphor or an Eu2+-activated green phosphor that has a light emission peak in a wavelength range of not less than 490 nm and less than 560 nm.
摘要:
The present invention provides an alloy powder that is a material for producing inorganic functional materials such as phosphors, a phosphor with high brightness, and a method for producing the phosphor. An alloy powder for an inorganic functional material precursor contains at least one metal element and at least one activating element M1 and has a weight-average median diameter D50 of 5 μm to 40 μm. A method for producing a phosphor includes a step of heating an alloy, containing two or more metal elements for forming the phosphor, in a nitrogen-containing atmosphere.
摘要:
Light emitting devices including backlights having a light source and a phosphor material including a complex fluoride phosphor activated with Mn4+ which may include at least one of (A) A2[MF5]:Mn4+; where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and where M is selected from Al, Ga, In, or combinations thereof; (B) A3[MF6]:Mn4+, where A is selected from Li, Na, K, Rb, Cs, NH4, and combinations thereof; and where M is selected from Al, Ga, In, or combinations thereof; (C) Zn2[MF7]:Mn4+, where M is selected from Al, Ga, In, or combinations thereof; and (D) A[In2F7]:Mn4+ where A is selected from Li, Na, K, Rb, Cs, NH4, or combinations thereof.
摘要:
An objective is to provide a core/shell type particle phosphor exhibiting an optimal excitation wavelength for fluorescence observation and excellent emission luminance of PL, together with excellent durability, to which particles are produced so as to be suitable for the field of bio-nanotechnology. Disclosed is a core/shell type particle phosphor comprising a core particle phosphor and coated thereon, a shell made of a metal compound having a different composition from a composition constituting the core particle phosphor, wherein the core particle phosphor is a particle phosphor prepared by baking a precursor synthesized via a reactive crystallization method, satisfying a PL (photoluminescence) intensity ratio A of the core particle phosphor to the core/shell type particle phosphor, {PL intensity(core)/PL intensity(core/shell)}; 0.001≦A≦0.1, and a core/shell type particle diameter of at most 0.1 μm.
摘要翻译:目的是提供一种显示用于荧光观察的最佳激发波长的核/壳型粒子荧光体,并且PL的出色亮度优异,同时具有出色的耐久性,可以生产出适合于生物纳米技术领域的粒子。 公开了一种包含芯颗粒磷光体并涂覆在其上的核/壳型颗粒磷光体,由与构成芯颗粒磷光体的组成不同的组成的金属化合物制成的壳,其中核心颗粒磷光体是通过烘焙制备的颗粒磷光体 通过反应结晶法合成的前体,满足核心粒子荧光体的PL(光致发光)强度比A与核/壳型粒子荧光体{PL强度(核心)/ PL强度(核/壳))}。 0.001 <= A <= 0.1,核/壳型粒径为0.1μm以下。
摘要:
This invention relates to luminescent materials for ultraviolet light or visible light excitation containing lead and/or copper doped chemical compounds. The luminescent material is composed of one or more than one compounds of aluminate type, silicate type, antimonate type, germanate/or germanate-silicate type, and/or phosphate type. Accordingly, the present invention is a good possibility to substitute earth alkaline ions by lead and copper for a shifting of the emission bands to longer or shorter wave length, respectively. Luminescent compounds containing copper and/or lead with improved luminescent properties and also with improved stability against water, humidity as well as other polar solvents are provided. The present invention is to provide lead and/or copper doped luminescent compounds, which has high color temperature range about 2,000K to 8,000K or 10,000K and CRI over 90.
摘要:
A low-pressure mercury discharge lamp with a very good color rendering and with a color point (x.sub.L, y.sub.I) on or close to the Planckian locus, includes a gastight, radiation-transmitting envelope which contains mercury and rare gas, and a luminescent layer includinga first luminescent material activated by bivalent europium and having an emission band whose maximum lies between 470 nm and 500 nm and whose half-value width is at most 90 nm,a second luminescent material activated by bivalent manganese and having at least an emission band mainly in the red region of the visible spectrum,a third luminescent material with a band emission whose maximum lies between 430 nm and 490 nm,a fourth luminescent material with emission mainly between 520 nm and 565 nm, anda fifth luminescent material with emission mainly between 590 nm and 630 nm.As compared to a lamp with only the first and second luminescent materials, the addition of the third through fifth materials considerably increases the luminous efficacy of the lamp while the very good color rendering is maintained, and the speed with which the luminescent layer is degraded during lamp life is considerably reduced.
摘要:
This invention is related to efficient inorganic borophosphate phosphors which can applied in various technical applications such as fluorescent lamps, colored light or white light emitting diodes, and other devices where phosphors are used to convert especially near UV radiation into the visible light. Further, this invention is related to light sources comprising the efficient borophosphate phosphor. The inventive phosphor absorbs radiation in a first wavelength range of the electromagnetic spectrum and emits radiation in a second wavelength range of the electromagnetic spectrum. This phosphor is a borophosphate activated with divalent rare earth metal ions.
摘要:
The present invention provides a plasma display device that has light emission properties with short persistence where green light has a persistence time of 3.5 msec or less, that is excellent in luminance, luminance degradation resistance, and color tone, and that is suitable for, for example, a stereoscopic image display device. The present invention provides a plasma display device including a plasma display panel in which a pair of substrates at least whose front side is transparent are disposed to oppose each other so as to form a discharge space between the substrates, barrier ribs for dividing the discharge space into a plurality of discharge spaces are disposed on at least one substrate, electrode groups are disposed on the substrates so as to produce discharge in the discharge spaces divided with the barrier ribs, and a green phosphor layer that emits light by the discharge is provided, wherein the green phosphor layer includes a mixed phosphor containing a short persistence Mn2+-activated green phosphor with a 1/10 persistence time of more than 2 msec but less than 5 msec and either a Ce3+-activated green phosphor or an Eu2+-activated green phosphor that has a light emission peak in a wavelength range of not less than 490 nm and less than 560 nm.
摘要:
This invention relates to luminescent materials for ultraviolet light or visible light excitation containing lead and/or copper doped chemical compounds. The luminescent material is composed of one or more than one compounds of aluminate type, silicate type, antimonate type, germanate/or germanate-silicate type, and/or phosphate type. Accordingly, the present invention is a good possibility to substitute earth alkaline ions by lead and copper for a shifting of the emission bands to longer or shorter wave length, respectively. Luminescent compounds containing copper and/or lead with improved luminescent properties and also with improved stability against water, humidity as well as other polar solvents are provided. The present invention is to provide lead and/or copper doped luminescent compounds, which has high color temperature range about 2,000K to 8,000K or 10,000K and CRI over 90.