Light-emitting material of nitrogen compound, preparation process thereof and illumination source manufactured therefrom

Abstract

A nitrogen compound luminescent material belongs to the field of LED inorganic luminescent materials. The nitrogen compound luminescent material has a chemical formula: M1-yEuyAlSiCxN3-4/3x. In the formula, M represents one or several of Li, Mg, Ca, Sr and Ba; 0<x≦0.2, 0<y≦0.5; and C represents the element Carbon. The luminescent material can be excited by ultraviolet, near ultraviolet or blue excitation light source such as LED, and emits red light with wavelength between 500-800nm, especially the maximum emission wavelength between 600-700 nm, exhibiting a wider excitation spectrum range, efficiency and stability. The corresponding method of the preparation is simple, easy to mass production and pollution-free. By using the luminescence material, and with ultraviolet, near ultraviolet or blue LED and other luminescent materials such as green fluorescent powder, a white LED light source can be provided.

Dependencies are inferred from the claim text.