Abstract:
A red phosphor includes a nitride represented by an empirical formula of Sr1−x−yBaxEuyAlSi4N7. A composition ratio (x) of barium (Ba) satisfies 0
Abstract:
A wavelength-converting film includes a sintered body formed of a mixture of a wavelength-converting material and a glass composition. The wavelength-converting material includes a quantum dot having a core-shell structure and a protective layer coating a surface of the quantum dot. A shell of the quantum dot contains at least one of Zn, S, and Se, the protective layer does not contain S and Se, and the glass composition includes a SnO2—P2O5—SiO2-based composition.
Abstract:
A white light emitting device includes a blue light emitting diode emitting first light having a dominant wavelength in a range of 440 nm to 460 nm, a quantum dot disposed on a path of the emitted first light and converting a first portion of the emitted first light into green light, and a fluoride phosphor disposed on the path of the emitted first light and converting a second portion of the emitted first light into red light. The quantum dot includes a core formed of a group III-V compound and a shell formed of a group II-VI compound, and the fluoride phosphor is represented by empirical formula AxMFy:Mn4+, A being at least one selected from Li, Na, K, Rb, and Cs, M being at least one selected from Si, Ti, Zr, Hf, Ge, and Sn, and the empirical formula satisfying 2≦x≦3 and 4≦y≦7.
Abstract:
Disclosed are a phosphor, a method for preparing and using the same, a light emitting device package, a surface light source apparatus, a lighting apparatus using the phosphor, and a display apparatus. The phosphor includes an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is a metallic element, 0
Abstract translation:公开了荧光体,其制备和使用方法,发光器件封装,表面光源装置,使用荧光体的照明装置和显示装置。 荧光体包括由经验式(Sr,M)2 SiO 4-x N y:Eu表示的无机化合物,其中M是金属元素,0
Abstract:
There is provided a fluoride phosphor composite including: fluoride phosphor core particles that may be expressed by the empirical formula AxMFy:Mn4+, wherein A may be at least one selected from the group consisting of Li, Na, K, Rb, and Cs, M may be at least one selected from the group consisting of Si, Ti, Zr, Hf, Ge, and Sn, the composition ratio (x) of A may satisfy 2≦x≦3, the composition ratio (y) of F may satisfy 4≦y≦7, each fluoride phosphor composite particle may be coated with a Mn-free fluoride coating. The Mn-free fluoride coating may have a thickness less than or equal to 35% of the size of each fluoride phosphor composite particle.
Abstract:
A method of manufacturing a white light emitting device includes dividing a phosphor sheet into phosphor film units to be applied to individual light emitting diode (LED) devices, measuring light conversion characteristics of the respective phosphor film units, classifying the phosphor film units of the phosphor sheet into a plurality of groups according to measurement results of the light conversion characteristics and combining the phosphor film units classified into the plurality of groups and an LED device having predetermined light characteristics so as to obtain target color characteristics.
Abstract:
There are provided a phosphor and a light emitting device. The phosphor includes a phosphor composition including a rare-earth element employed in a compound represented by the equation: L3Si6N11, wherein L is one or more elements selected from La, Y, Gd and Lu, the rare-earth element is one or more elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Tb, Ho, Er, Tm and Yb. The phosphor composition is provided in particle form. The particle has at least a portion of a plane perpendicular to a [001] direction to be flat thereon so as to have a crystal plane.
Abstract:
A white light emitting device includes a substrate, a first light emitting diode configured to emit first blue light having a peak intensity at a wavelength within the range of 445 nm to 455 nm, a second light emitting diode configured to emit second blue light having a peak intensity at a wavelength within the range of 465 nm to 495 nm, and a wavelength conversion unit configured to convert portions of the first blue light and the second blue light, and to provide white light formed by a combination of the converted portions of the first blue light and the second blue light with unconverted portions of the first blue light and the second blue light. The wavelength conversion unit includes a first wavelength conversion material configured to emit first light having a peak intensity at a wavelength within the range of 520 nm to 560 nm, and a second wavelength conversion material configured to emit second light having a peak intensity at a wavelength within the range of 600 nm to 645 nm.
Abstract:
A method of manufacturing a fluoride phosphor represented by a chemical formula A3MF7:Mn4+ includes forming a first mixture by mixing a first raw material containing A2MF6 and a second raw material containing AF or AHF2, forming a second mixture by mixing the first mixture and a sintering aid, and firing the second mixture. In the chemical formula, A is at least one selected from Li, Na, K, Rb, Cs and mixtures thereof, and M is at least one selected from Si, Ti, Zr, Hf, Ge, Sn, and mixtures thereof.
Abstract:
A red phosphor contains a nitride having a formula of SrxMgySizN2/3(x+y+2z+w):Euw, in which x, y, z, and w satisfy the relationships 0.5≦x≦2, 2.5≦y≦3.5, 0.5≦z≦1.5 and 0