Mitsui Minings & Melting Co., Ltd.

Riichi Ogawara

Jun-ichi Itoh

Asuka Sasakura

Akinori Kumagai

Masaaki Inamura

Taizou Morinaka

Jun-Ichi Itoh

Provided is a novel coated phosphor capable of effectively suppressing the adverse effects of hydrogen sulfide gas generated by the reaction between a sulfur-containing phosphor and moisture in the air. Provided is a sulfur-containing phosphor having a configuration in which ZnO compound containing Zn and O is present on the surface of a sulfur-containing phosphor having a host material which includes sulfur.

Sulfur-containing phosphor coated with ZnO compound

A green emitting phosphor is provided, allowing the internal quantum efficiency to be increased. The green emitting phosphor comprises a mother crystal containing Sr, Ga and S, and a luminescent center, characterized in that, in an XRD pattern, the ratio of the diffraction intensity of the maximum peak appearing at diffraction angle 2&#x3b8;=14 to 20&#xb0; over the diffraction intensity of the maximum peak appearing at diffraction angle 2&#x3b8;=21 to 27&#xb0; is 0.4 or greater.

Green emitting phosphor

Growing community of inventors

Ageo, Japan

Riichi Ogawara