Nichia Corporation

Tomoya Fukui

Tadayoshi Yanagihara

Hirofumi Ooguri

Shigeki Yoshida

Provided is a method for producing a wavelength conversion sintered body that emits light under irradiation of excitation light. The method for producing a wavelength conversion sintered body includes: preparing a molded body obtained by molding a mixture containing an &#x3b1;-SiAlON fluorescent material and aluminum oxide particles and having a content of Ga of 15 ppm by mass or less; and primary calcining the molded body at a temperature in a range of 1,370&#xb0; C. or more and 1,600&#xb0; C. or less to obtain a first sintered body.

Method for producing wavelength conversion sintered body

A method for producing a wavelength converting member that emits light under irradiation of excitation light, and a wavelength converting member. The method for producing a wavelength converting member, including: providing a green body prepared by a process comprising molding a mixed powder containing a Ca-&#x3b1;-SiAlON fluorescent material and alumina, and depending on necessity an YAG fluorescent material; and primarily sintering the green body at a temperature in a range of 1,000&#xb0; C. or more and 1,600&#xb0; C. or less to obtain a first sintered body.

Method for producing wavelength converting member, and wavelength converting member

Provided are a method for producing a ceramic composite material that has a high light emission intensity, a ceramic composite material, and a light emitting device. The method for producing a ceramic composite material, includes: preparing a green body containing a nitride fluorescent material having a composition represented by the following chemical formula (I) and aluminum oxide particles mixed with each other; and performing primary sintering the green body at a temperature in a range of 1,250&#xb0; C. or more and 1,600&#xb0; C. or less to provide a first sintered body:MLnAN&#x2003;&#x2003;(I)wherein in the chemical formula (I), M represents at least one element selected from the group consisting of Ce and Pr; Lnrepresents at least one element selected from the group consisting of Sc, Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu; A represents at least one element selected from the group consisting of Si and B; and w, x, y, and z each satisfy 0&#x3c;w&#x2264;1.0, 2.5&#x2264;x&#x2264;3.5, 5.5&#x2264;y&#x2264;6.5, and 10&#x2264;z&#x2264;12.

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Tokushima, Japan

Tomoya Fukui