摘要:
A chemically and thermally stable phosphor having unconventional light emitting properties and high light emitting intensity with an LED of 470 nm or less, includes an inorganic compound comprising: a crystal designated by A 3 (D,E) 8 X 14 , a crystal designated by Sr 3 Si 8 O 4 N 10 or an inorganic crystal having the identical crystal structure of the Sr 3 Si 8 O 4 N 10 crystal, which comprises A element, D element, X element, and optionally E element if necessary (A is one or more kinds selected from Li, Mg, Ca, Sr, and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr, and Hf; X is one or more kinds selected from O, N, and F; and E is one or more kinds selected from B, Al, Ga, In, Sc, Y, and La.), into which M element is solid-solved (M is one or more kinds selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb.).
摘要翻译:具有470nm或更小的LED的非常规发光特性和高发光强度的化学和热稳定的荧光体包括无机化合物,其包含:由A 3(D,E)8 X 14表示的晶体,由 Sr 3 Si 8 O 4 N 10或Sr 3 Si 8 O 4 N 10晶体具有相同晶体结构的无机晶体,其包含A元素,D元素,X元素和任选的E元素(A为1 选自Li,Mg,Ca,Sr和Ba中的一种或多种; D是选自Si,Ge,Sn,Ti,Zr和Hf中的一种或多种; X是选自O,N和 F,E是选自B,Al,Ga,In,Sc,Y和La中的一种或多种),其中M元素是固溶的(M是选自Mn,Ce,Pr ,Nd,Sm,Eu,Tb,Dy和Yb)。
摘要:
A photovoltaic device including a composite down-converting layer disposed on the device, is presented. The composite down-converting layer includes down-converting material particles (10) dispersed in a matrix (12). The size of the down-converting material particles is a function of a difference in respective refractive indices (An) of the down-converting material and the matrix (12) such that: (i) for Δn less than about 0.05, the size of down-converting material particles (10) is in a range from about 0.5 micron to about 10 microns, and (ii) for Δn at least about 0.05, the size of down-converting material particles (10) is in a range from about 1 nanometer to about 500. A photovoltaic module having a plurality of such photovoltaic devices is also presented.
摘要:
A process for preparing phosphor particles of a host oxide doped with a rare earth or manganese which comprises:preparing an aqueous solution of salts of the host ion and of the dopant ion and a water soluble compound which decomposes under the reaction conditions to convert said salts into hydroxycarbonate,heating the solution so as to cause said compound to decompose,recovering the resulting precipitate andcalcining it at a temperature of at least 500° C.Substantially monocrystalline particles can be obtained by this process.
摘要:
An intensifying screen for producing a latent image in a silver halide radiographic element upon exposure to an image pattern of X-radiation is disclosed. The intensifying screen contains a fluorescent layer containing a phosphor capable of absorbing X-radiation and emitting longer wavelength electromagnetic radiation comprised of monoclinic crystals of a titanium activated zirconium hafnium oxide phosphor host. The phosphor contains in an amount sufficient to enhance emission of the longer wavelength electromagnetic radiation at least one alkali metal in combination with at least one Group 14 dopant chosen from Periods 3, 4 and 5.
摘要:
An object of the present invention is to provide an inorganic phosphor having fluorescence properties emitting an orange or red light which has a longer wavelength as compared with the cases of conventional sialon phosphors activated with a rare earth. The invention relates to a design of white light-emitting diode rich in a red component and having good color-rendering properties by employing a solid solution crystal phase phosphor which uses as a host crystal an inorganic compound having the same crystal structure as that of a CaSiAlN 3 crystal phase and to which M Element (wherein M Element is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) is added as an emission center.
摘要:
An object of the present invention is to provide an inorganic phosphor having fluorescence properties emitting an orange or red light which has a longer wavelength as compared with the cases of conventional sialon phosphors activated with a rare earth. The invention relates to a design of white light-emitting diode rich in a red component and having good color-rendering properties by employing a solid solution crystal phase phosphor which uses as a host crystal an inorganic compound having the same crystal structure as that of a CaSiAlN 3 crystal phase and to which M Element (wherein M Element is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) is added as an emission center.
摘要:
Luminescent material compositions, in particular for use in high-temperature environments, and structures, such as thermal barrier coatings (TBCs), which incorporate the same.