Abstract: The phosphor composition including a first phosphor represented by Formula 1: Y3?x?kCekM?xAla?yM?yO(1.5a+4.5)??(1). In Formula 1, M? includes at least one of Sc, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, k, and a satisfy the relations: 0.0?x<3.0, 0.0<y?7.0, 0.0<k<0.1, 4.0?a?7.0, a?y?0.0, and x+k?3.0.

Abstract: A phosphor composition for a display device, including a phosphor represented by Formula 1: Y3-x-k-zCekMzM?xAla-yM?yO(1.5a+4.5)??(1). In Formula 1, M includes at least one of Tb, Dy, and Eu, M? includes at least one of Sc, Gd, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, z, k, and a represent molar ratios and satisfy the relations: 0.0?x<3.0, 0.0?y?7.0, 0.0<k<0.1, 0.0<z<0.5, 4.0?a?7.0, a-y?0.0, x+k+z?3.0, and 0.01?z/k?20.

Abstract: A positive active material including a lithium composite oxide and a transition metal oxide including a transition metal having an oxidation number smaller than an oxidation number when the transition metal is in the most stable state hinders generation of oxygen occurring during charging and provides a lithium battery with high-temperature preservation characteristics and high stability.

Abstract: A red phosphor, including a first phosphor represented by Formula 1 (Y1-x1Mx1)2-y1O3:Euy1??(1). In Formula 1, M includes at least one of Gd, La, Sc, and Lu, and x1 and y1 satisfy the relations: 0.00?x1?0.8 and 0.025?y1?0.20.

Abstract: A red phosphor includes yttrium (Y), gadolinium (Gd), an alkaline-earth metal element, and europium (Eu). A plasma display panel (PDP) includes the red phosphor.

Abstract: Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a first active material represented by Formula 1: Li2Mo1-nR1nO3; a second active material represented by Formula 2: Li2Ni1-mR2mO2; and a third active material configured to allow that allows reversible intercalation and deintercalation of lithium ions. In Formula 1, 0?n<1, and R1 is selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), magnesium (Mg), nickel (Ni), and combinations of at least two of the foregoing elements. In Formula 2, 0?m<1, and R2 is selected from the group consisting of Mn, Fe, Co, Cu, Zn, Mg, molybdenum (Mo), and combinations of at least two of the immediately foregoing elements.

Abstract: Disclosed is a positive electrode and a lithium battery including the positive electrode. The positive electrode includes a current collector, a first layer irreversibly deintercalating lithium ions, and a second layer allowing reversible intercalation and deintercalation of lithium ions. In one embodiment, the first layer further comprises a first sublayer and a second sublayer, in which the first sublayer is interposed between the current collector and the second sublayer. The first sublayer comprises a first active material represented by Formula 1 Li2Mo1-nR1nO3, and the second sublayer comprises a second active material represented by Formula 2 Li2Ni1-mR2mO2. In Formula 1, 0?n?1; and R1 is selected from the group consisting of manganese (Mn), iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), magnesium (Mg), nickel (Ni), and combinations of at least two of the foregoing elements.

Abstract: A positive active material for lithium secondary battery containing a composite that includes a composite of lithium aluminum oxide and lithium nickel oxide and lithium secondary battery using the same.

Abstract: A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.

Abstract: A positive active material for a rechargeable lithium battery including a lithium metal oxide represented by the following Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same. LiaMeM?kO2 ??Chemical Formula 1 In Chemical Formula 1, Me is NixCoyMnz, M? is Mg, Al, Fe, P, or a combination thereof, 0.955a<1.05, 0.001?k?0.1, 0.5<x?0.65, 0.1<y?0.25, 0.1<z?0.25, x+y+z+k=1, M? is doped at a Li site and at least one of Ni, Co, and Mn sites, M? is doped in an amount at 0.1 mol % or 10 mol % or between 0.1 mol % and 10 mol % based on the total amount of Ni, Co, and Mn, and a doping mole ratio of M? doped at the Li site with respect to a Me site is in the following range: about 0.001?ALi/AMe?about 0.5.

Abstract: Disclosed are a positive active material for a lithium rechargeable battery and a lithium rechargeable battery using the same, and the positive active material is represented by the following Chemical Formula 1, and has an effective magnetic moment of about 2.4 ?B/mol or greater at a temperature of more than or equal to a Curie temperature. Chemical Formula 1: LiMeO2. In Chemical Formula 1, Me is NixCOyMnzM?k, 0.45?x?0.65, 0.15?y?0.25, 0.15?z?0.35, 0.9?a?1.2, 0?k?0.1, x+y+z+k=1, and M? is Al, Mg, Ti, Zr, or a combination thereof. The positive active material may have an a-axis lattice constant of the positive active material of about 2.865 ? or greater, and may have a c-axis lattice constant of the positive active material of about 14.2069 ? or greater. A mole ratio of Li to Me of Chemical Formula 1 may range from about 0.9 to about 1.2.

Abstract: A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5% to about 20%. Also disclosed is a method of preparing the positive active material, and a rechargeable lithium battery including the positive active material.

Abstract: Disclosed is a positive active material precursor for a secondary lithium battery, which is represented by the following Chemical Formula 1 and has an intensity ratio of I100/I001 of more than or equal to about 2 of the peak I100 of a (001) plane peak to the peak I001 of a (100) plane peak according to X-ray diffraction analysis, a W100/W001 ratio of less than about 2 of the full width at half maximum W100 of a (100) plane peak to the full width at half maximum W001 of a (001) plane peak according to X-ray diffraction analysis, and an S100/S001 ratio of less than or equal to about 0.265 of the area S001 of a (001) plane peak and the area S100 of a (100) plane peak according to X-ray diffraction analysis. [Chemical Formula 1] NixCoyMnzMk(OH)2 wherein, M is a metal, 0.45?x?0.65, 0.15?y?0.25, 0.15?y?0.35, 0?k?0.1, and x+y+z+k=1.

Abstract: A green phosphor, a plasma display panel (PDP) including the same, and a method for making the same. In one example, the green phosphor includes strontium (Sr); aluminum (Al); europium (Eu); and at least one element (M) selected from the group consisting of phosphorous (P), arsenic (As), antimony (Sb), and bismuth (Bi).

Abstract: Provided are a phosphor used in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor. (Y1-x-yGdxTby)AlrQ3-r(BO3)4 ??Formula 1 where 0<x?1, 0<y?1, Q is Sc, In, or Ga, and 0?r<3. When the phosphor is used to form a green phosphor layer of a PDP, the luminance saturation problem of a conventional green phosphor can be overcome. In addition, a PDP including a phosphor layer comprising the phosphor has a wider color reproduction range and no reduction in luminance according to the mixing ratio of each phosphor contained in the phosphor compared with a conventional phosphor used in a PDP. Therefore, a PDP including a phosphor layer comprising the phosphor can have far superior image qualities.

Abstract: A green phosphor including a compound represented by Formula 1 (Y3-xMx) (Al5-yM?y)O12:Cez and a pigment. The green phosphor having the compound represented by Formula 1 and a pigment has a shorter decay time than conventional phosphors, and thereby confers excellent luminescence characteristics and color purity. A display panel including the green phosphor 1 is also provided herein.

Abstract: A green phosphor, a plasma display panel (PDP) including the same, and a method for making the same. In one example, the green phosphor includes strontium (Sr); aluminum (Al); europium (Eu); and at least one element (M) selected from the group consisting of phosphorous (P), arsenic (As), antimony (Sb), and bismuth (Bi).

Abstract: A red phosphor is represented by the following Formula 1. (Y1-xMx)1-z(VyM?1-y)O4:Euz??[Formula 1] wherein, M is an element selected from the group consisting of Gd, In, La, Sc, Lu, and combinations thereof, M? is an element selected from the group consisting of P, Nb, W, and combinations thereof, 0.00?x?1.00, 0.40<y?1.00, and 0.01?z?0.20. A display device includes the red phosphor.

Abstract: A blue phosphor, a display device including the same, and associated methods, the blue phosphor including BaMgAl10O17:Eu (BAM) phosphor particles having a surface component and an internal component, wherein an aluminum/barium (Al/Ba) molar ratio of the surface component of the phosphor particles is 1.1 to about 1.4 times the Al/Ba molar ratio of the internal component of the phosphor particles, and the Al/Ba molar ratios are continuously variable between the internal component and the surface component.

Abstract: A green phosphor including a first phosphor represented by Formula 1: Ya-x-kCekM?xAlbO3/2(a+b)??(1). In Formula 1, M? includes at least one of Sc, Gd, In, Lu, La, and x, k, a, and b satisfy the relations 0.0?x?5.0, 0.0<k<0.1, 0.5?a?5.0, 0.5?b?7.0, and a-x-k >0.