US 10,370,590 B2Granted

Phosphor

AssigneesKoito Manufacturing Co., Ltd., Tokyo Institute of Technology, National University Corporation Nagoya University

InventorsHisayoshi Daicho, Yu Shinomiya, Kiminori Enomoto, Hideo Hosono, Satoru Matsuishi, Hiroshi Sawa, Akitoshi Nakano

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Abstract

A phosphor is represented by the general formula aMIX·MII1-xMIMVO4:(Re)x where MI is at least one atomic element selected from the group consisting of K, Li, Na, Rb, Cs, Fr, Cu, and Ag, with K being essential; MII is at least one atomic element selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Mn, Zn, Cd, and Sn; MV is at least one atomic element selected from the group consisting of P, V, Nb, Ta, As, Sb, and Bi; X is at least one halogen element, with F being essential; Re is at least one atomic element selected from the group consisting of rare earth elements, with Eu being essential; and a is in the range 0.6≤a≤1.4.

Claims5

Dependent claims

A phosphor represented by the general formula aMIX·MII1-xMIMVO4:

(Re)x,
where
MI is at least one atomic element selected from the group consisting of K, Li, Cs, and Ag, with K being essential;
MII is at least one atomic element selected from the group consisting of Mg, Ca, Mn, Zn, Cd, and Sn, with Ca being essential;
MV is at least one atomic element selected from the group consisting of P, V, Nb, Ta, Sb, and Bi, with P being essential;
X is at least one halogen element selected from the group consisting of F, Br, and I, with F being essential;
Re is at least one atomic element selected from the group consisting of Eu, Sc, Y, La, Pr, Nd, Gd, Tb, Dy, Ho, Er, Yb, Lu, and Ce, with Eu being essential,
a is in the range 0.6≤a≤1.4;
x is in a range of 0.007≤×≤0.2;
and
at least one of the following conditions (1)-(5) is met:
(1) MI also includes at least one atomic element selected from the group consisting of Li, Cs, and Ag,
(2) MII also includes at least one atomic element selected from the group consisting of Mg, Mn, Zn, Cd, and Sn,
(3) MV also includes at least one atomic element selected from the group consisting of V, Nb, Ta, Sb, and Bi,
(4) X also includes at least one atomic element selected from the group consisting of Br or I, and
(5) Re also includes at least one atomic element selected from the group consisting of Sc, Y, La, Pr, Nd, Gd, Tb, Dy, Ho, Er, Lu, and Ce.

13 more elements

Dependencies are inferred from the claim text.