Abstract: Provided is a method of producing a Mn-activated complex fluoride phosphor, the method including: mixing a red phosphor as a Mn-activated complex fluoride represented by the following formula (1): K2MF6:Mn??(1) wherein M is one or two or more of tetravalent elements selected from the group consisting of Si, Ti, Zr, Hf, Ge and Sn and necessarily includes Si, with K2MnF6 in solid state and optionally with a hydrogenfluoride represented by the following formula (2): AF.nHF??(2) wherein A is one or two or more of alkali metals and/or ammonium selected from the group consisting of Li, Na, K, Rb and NH4 and necessarily includes K, and n is a number of 0.7 to 4, in solid state; and heating the resulting mixture at a temperature of 100 to 500° C. According to the present invention, it is possible to obtain a Mn-activated complex fluoride phosphor which can be used with smaller amount as compared to those according to the related art.

Abstract: Provided is a method of producing a Mn-activated complex fluoride phosphor, the method including: mixing a red phosphor as a Mn-activated complex fluoride represented by the following formula (1): K2MF6:Mn??(1) wherein M is one or two or more of tetravalent elements selected from the group consisting of Si, Ti, Zr, Hf, Ge and Sn and necessarily includes Si, with K2MnF6 in solid state and optionally with a hydrogenfluoride represented by the following formula (2): AF.nHF??(2) wherein A is one or two or more of alkali metals and/or ammonium selected from the group consisting of Li, Na, K, Rb and NH4 and necessarily includes K, and n is a number of 0.7 to 4, in solid state; and heating the resulting mixture at a temperature of 100 to 500° C. According to the present invention, it is possible to obtain a Mn-activated complex fluoride phosphor which can be used with smaller amount as compared to those according to the related art.

Abstract: A method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics that is capable of producing the ceramics at a reduced raw material cost. In addition, a sintered product of a long-lasting phosphor having no yellow body color. More specifically, the method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics in which M is an alkaline earth element and RE is a rare earth element other than europium, involving mixing a BAM (alkaline earth aluminate) phosphor, an alkaline earth compound, an aluminum compound and a rare earth compound to form a mixture, and then firing the mixture; and a white MAl2O4:Eu,RE type long-lasting phosphor resulting from the method.

Abstract: A method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics that is capable of producing the ceramics at a reduced raw material cost. In addition, a sintered product of a long-lasting phosphor having no yellow body color. More specifically, the method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics in which M is an alkaline earth element and RE is a rare earth element other than europium, involving mixing a BAM (alkaline earth aluminate) phosphor, an alkaline earth compound, an aluminum compound and a rare earth compound to form a mixture, and then firing the mixture; and a white MAl2O4:Eu,RE type long-lasting phosphor resulting from the method.

Abstract: In a yttrium-cerium-aluminum garnet phosphor having a crystallographic texture, nanocrystalline grains having a grain size of 5-20 nm and containing cerium in a higher concentration than the matrix phase are dispersed in the crystallographic texture. The emission color of the phosphor is shifted to the longer wavelength side. The phosphor can maintain its satisfactory emission performance even at high temperature.

Abstract: Intended is a phosphor of the formula: (A1-xBx)3C5O12 wherein A is Y, Gd, and/or Lu, B is Ce and/or Tb, C is Al and/or Ga, and 0.002?x?0.2. A phosphor precursor is prepared by suspending gamma-alumina particles having a specific surface area of at least 50 m2/g and dissolving a rare earth element salt in water to form a suspended aqueous to solution, adding urea thereto, heating the solution to form mixed fine particles of gamma-alumina and rare earth element salt, separating, and firing the mixed fine particles at 600-1,000° C. to form mixed oxide fine particles of rare earth oxide and alumina.

Abstract: The present invention provides a production process for the production of an MAl2O4:Eu type long-lasting phosphor (M representing an alkaline earth metal). The process includes the steps of mixing a BAM (alkaline earth aluminate) phosphor with an alkaline earth compound and calcinating the resulting mixture.

Abstract: A wafer has a rare earth oxide layer disposed, typically sprayed, on a substrate. It is useful as a dummy wafer in a plasma etching or deposition system.

Abstract: A wafer has a rare earth oxide layer disposed, typically sprayed, on a substrate. It is useful as a dummy wafer in a plasma etching or deposition system.

Abstract: A wafer has a rare earth oxide layer disposed, typically sprayed, on a substrate. It is useful as a dummy wafer in a plasma etching or deposition system.

Abstract: Provided is a method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics capable of producing the ceramics at a reduced raw material cost. In addition, provided is a sintered product of a long-lasting phosphor having no yellow body color. More specifically, provided are the method for manufacturing MAl2O4:Eu,RE type long-lasting phosphor ceramics in which M is an alkaline earth element and RE is a rare earth element other than europium, comprising mixing a BAM (alkaline earth aluminate) phosphor, an alkaline earth compound, an aluminum compound and a rare earth compound to form a mixture, and then firing the mixture; and a white MAl2O4:Eu,RE type long-lasting phosphor.

Abstract: The present invention provides a production process for the production of an MAl2O4:Eu type long-lasting phosphor (M representing an alkaline earth metal). The process includes the steps of mixing a BAM (alkaline earth aluminate) phosphor with an alkaline earth compound and calcinating the resulting mixture.

Abstract: A wafer has a rare earth oxide layer disposed, typically sprayed, on a substrate. It is useful as a dummy wafer in a plasma etching or deposition system.