摘要:
Phosphor and a plasma display device are provided whose deterioration in brightness of phosphors and a degree of change in chromaticity are alleviated and whose discharge characteristics are improved and that has excellent initial characteristics. Phosphor of the present invention is an alkaline-earth metal aluminate phosphor containing an element M (where M denotes at least one type of element selected from the group consisting of Nb, Ta, W and B). In this phosphor, a concentration of M in the vicinity of a surface of the phosphor particles is higher than the average concentration of M in the phosphor particles as a whole. A plasma display device according to the present invention includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, where the afore-mentioned phosphor is used as the blue phosphor.
摘要:
Phosphor and a plasma display device are provided whose deterioration in brightness of phosphors and a degree of change in chromaticity are alleviated and whose discharge characteristics are improved and that has excellent initial characteristics. Phosphor of the present invention is an alkaline-earth metal aluminate phosphor containing an element M (where M denotes at least one type of element selected from the group consisting of Nb, Ta, W and B). In this phosphor, a concentration of M in the vicinity of a surface of the phosphor particles is higher than the average concentration of M in the phosphor particles as a whole. A plasma display device according to the present invention includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, where the afore-mentioned phosphor is used as the blue phosphor.
摘要:
A plasma display device is provided in which deterioration in brightness of phosphor layers can be avoided. The plasma display device includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, the blue phosphor being composed of an alkaline-earth metal aluminate phosphor containing at least one element selected from the group consisting of Mo and W. The addition of hexavalent ions (Mo, W) in the blue phosphor allows the elimination of oxygen defects in the vicinity of a layer containing Ba atoms (Ba—O layer), the suppression of adsorption of water to the surface of the blue phosphor and the improvement of deterioration in brightness and a change in chromaticity for the respective phosphors and discharge characteristics.
摘要:
A plasma display device is provided in which deterioration in brightness of phosphor layers can be avoided. The plasma display device includes a plasma display panel in which a plurality of discharge cells in one color or in a plurality of colors are arranged and phosphor layers are arranged so as to correspond to the discharge cells in colors and in which light is emitted by exciting the phosphor layers with ultraviolet rays. The phosphor layers include blue phosphor, the blue phosphor being composed of an alkaline-earth metal aluminate phosphor containing at least one element selected from the group consisting of Mo and W. The addition of hexavalent ions (Mo, W) in the blue phosphor allows the elimination of oxygen defects in the vicinity of a layer containing Ba atoms (Ba—O layer), the suppression of adsorption of water to the surface of the blue phosphor and the improvement of deterioration in brightness and a change in chromaticity for the respective phosphors and discharge characteristics.
摘要:
The present invention is a light-emitting device which is provided with a phosphor layer containing a blue phosphor, wherein the phosphor layer includes an aluminate phosphor, as the blue phosphor, that contains Ba, Sr, Eu, Mg, Al and O as constituting elements at an atom-number ratio Ba:Sr:Eu:Mg:Al:O=p:q:r:1:w:17 wherein 0.70≦p≦0.95, 0≦q≦0.15, 0.05≦r≦0.20, p+q+r≧1, and 9.8≦w≦10.5 are satisfied, and a value of a linear coupling function s represented by a formula: s=−11622+2043.07La+199.24L1−116.91L2 is 1 or less, when a lattice constant is La(Å), an interatomic distance between Al(2) and O(5) is L1(Å), and an interatomic distance between Al(1) and O(4) is L2(Å), which are obtained by an X-ray crystal structure analysis assuming that the aluminate phosphor belongs to a space group P63/mmc.
摘要:
The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO3/2.eWO3, where 0.70≦a≦0.95, 0≦b≦0.15, 0.95≦c≦1.15, 9.00≦d≦11.00, 0.001≦e≦0.100, and a+b≦0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2θ=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 Å.
摘要:
The present invention provides a blue phosphor having high luminance and showing less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor that includes: an alkaline earth metal aluminate represented by a general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO3/2, where 0.70≦a≦0.95, 0≦b≦0.15, 0.95≦c≦1.15, 9.00≦d≦11.00, and a+b≦0.97 are satisfied; and 0.008 mol to 0.800 mol of MWO4 with respect to 1 mol of the aluminate, where M is at least one element selected from a group consisting of Ba, Sr, and Ca.
摘要:
The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO3/2.eWO3, where 0.70≦a≦0.95, 0≦b≦0.15, 0.95≦c≦1.15, 9.00≦d≦11.00, 0.001≦e≦0.100, and a+b≦0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2θ=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 Å.
摘要:
The present invention provides a blue phosphor having high luminance and showing less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor that includes: an alkaline earth metal aluminate represented by a general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO3/2, where 0.70≦a≦0.95, 0≦b≦0.15, 0.95≦c≦1.15, 9.00≦d≦11.00, and a+b≦0.97 are satisfied; and 0.008 mol to 0.800 mol of MWO4 with respect to 1 mol of the aluminate, where M is at least one element selected from a group consisting of Ba, Sr, and Ca.
摘要:
The present invention provides a blue phosphor that exhibits high luminance and shows less luminance degradation during driving of a light-emitting device. The present invention is a blue phosphor represented by the general formula aBaO.bSrO.(1−a−b)EuO.cMgO.dAlO3/2.eWO3, where 0.70≦a≦0.95, 0≦b≦0.15, 0.95≦c≦1.15, 9.00≦d≦11.00, 0.001≦e≦0.100, and a+b≦0.97 are satisfied. In this blue phosphor, two peaks whose tops are located in a range of diffraction angle 2θ=13.0 to 13.6 degrees are present in an X-ray diffraction pattern obtained by measurement on the blue phosphor using an X-ray with a wavelength of 0.774 Å.