Koito Manufacturing Company, Ltd.

Tokyo Institute of Technology

Nagoya University

Akitoshi Nakano

Hideo Hosono

Hisayoshi Daicho

Yu Shinomiya

Kiminori Enomoto

Satoru Matsuishi

Hiroshi Sawa

In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.

Phosphor

A phosphor is represented by the general formulaMX&#xb7;MMMO:(Re)where Mis at least one atomic element selected from the group consisting of K, Li, Na, Rb, Cs, Fr, Cu, and Ag, with K being essential; Mis at least one atomic element selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Mn, Zn, Cd, and Sn; Mis 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&#x2264;a&#x2264;1.4.

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Nagoya, Japan

Akitoshi Nakano