Koito Manufacturing Company, Ltd.

Shinobu Aoyagi

Hisayoshi Daicho

Yu Shinomiya

Kiminori Enomoto

Takeshi Iwasaki

Yasutaka Sasaki

Hiroshi Sawa

A phosphor has the general formula (M,M,M)MOX, wherein Mrepresents at least one element including at least Si and selected from the group consisting of Si, Ge, Ti, Zr, and Sn, Mrepresents at least one element including at least Ca and selected from the group consisting of Ca, Mg, Cd, Co, and Zn, Mrepresents at least one element including at least Sr and selected from the group consisting of Sr, Ra, Ba, and Pb, X represents at least one halogen element, Mrepresents at least one element including at least Euand selected from the group consisting of rare-earth elements and Mn, m is in the range 1&#x2266;m&#x2266;4/3, n is in the range 5&#x2266;n&#x2266;7, and x, y, and z are each in such a range as to satisfy x+y+z=1, 0.45&#x2266;x&#x2266;0.8, 0.05&#x2266;y&#x2266;0.45, and 0.45, and 0.03&#x2266;z&#x2266;0.35.

Phosphor and light-emitting device

A phosphor includes a composition represented by the formula: (M, M, M)MOX, wherein Mis Si and may include at least one element selected Ge, Ti, Zr, and Sn; Mis Ca and may include at least one element selected Mg, Ba, and Zn; Mis Sr and may include at least one element selected from the group consisting of Mg, Ba, and Zn; X is at least one kind of halogen element; Mis Euand may includes at least one element rare-earth elements and Mn, wherein m is in a range of 6/6&#x2266;m&#x2266;8/6; n is in a range of 5&#x2266;n&#x2266;7; and x, y, and z satisfies x+y+z=1, where 0&#x3c;x&#x3c;1, 0&#x3c;y&#x3c;1, and 0.01&#x2266;z&#x2266;0.3.

Phosphor and light emitting device

A phosphor is provided. The phosphor includes a composition represented by the formula: MO.aMO.bMX:M,where Mis at least one element selected from the group consisting of Si, Ge, Ti, Zr, and Sn; Mis at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; Mis at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; X is at least one halogen element; Mis at least one element essentially including Euselected from the group consisting of rare-earth elements and Mn; a is in the range of 0.1&#x2266;a&#x2266;1.3; and b is in the range of 0.1&#x2266;b&#x2266;0.25.

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Nagoya, Japan

Shinobu Aoyagi