Red-emitting phosphors with highly enhanced luminescent efficiency and their preparation methods

摘要

The present invention relates to a high efficiency of light emission of a red phosphor and a method of manufacturing the same, to provide the oxide phosphor represented by the general formula (1). A _2-xyz B _x C _y D _z O _3-x (1) the above formula, A is at least one member selected from gadolinium (Gd), and yttrium (Y), and; B is lithium (Li), sodium (Na) and potassium (K) 1 or more species selected from alkali metal ions, and; C is a ruthenium (Ru), rhodium (Rh), palladium (Pd), is at least one member selected from (Ag) transition metal element or praseodymium (Pr), terbium (Tb), erbium (Er), and thulium (Tm) at least one rare earth element selected from a; D and is characterized by a europium (Eu) element, 0 & x 0.3, 0 & y 0.3, 0 & . Z 0.3 a red light-emitting phosphor according to the present invention is a brightness enhancement in the UV region The phosphor according to the present invention, especially because it indicates an extremely enhanced luminance in a voltage region of 10 ~ 20 kV fluorescent lamp, when applied to a fluorescent display or FED can be obtained greatly improved luminance. ;