Fluorophore, Method for Producing Same, Light-Emitting Device, and Image Display Device

摘要

Provided is chemically and thermally stable phosphor having light-emitting characteristics different from the conventional phosphor and high emission intensity when combined with LED of not exceeding 470 nm. The phosphor comprises inorganic compound having crystal represented by A2(D,E)5X9; crystal represented by Ca2Si5O3N6; or inorganic crystal having the same crystal structure as crystal represented by Ca2Si5O3N6, which includes A, D, E, and X elements (A is one or more kinds selected from Mg, Ca, Sr, and Ba; D is one or more kinds selected from Si, Ge, Sn, Ti, Zr, and Hf; E is one or more kinds selected from B, Al, Ga, In, Sc, Y, and La; and X is one or more kinds selected from O, N, and F), in which M element (M is one or more kinds of elements selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) is solid-solved.

主权项

1. A phosphor comprising: an inorganic compound comprising:
a crystal represented by A2(D,E)5X9; a crystal represented by Ca2Si5O3N6; or an inorganic crystal having a same crystal structure as the crystal represented by the Ca2Si5O3N6, which includes an A element, a D element, an E element, and an X element (wherein A is one or two or more kinds of elements selected from the group consisting of Mg, Ca, Sr, and Ba; D is one or two or more kinds of elements selected from the group consisting of Si, Ge, Sn, Ti, Zr, and Hf; E is one or two or more kinds of elements selected from the group consisting of B, Al, Ga, In, Sc, Y, and La; and X is one or two or more kinds of elements selected from the group consisting of O, N, and F), wherein an M element (wherein M is one or two or more kinds of elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb) is solid-solved into each of the crystals.