Red light-emitting nitride material, and light-emitting part and light-emitting device comprising the same

US9252339B2 · kind B2 · utility

Assignee

• GRIREM ADVANCED MATERIALS CO., LTD. · CN

Inventors

• Yunsheng Hu · Beijing, CN
• Tao He · Wilmington, US
• Huaqiang He · Beijing, CN
• Weidong Zhuang · Beijing, CN
• Ronghui Liu · Beijing, CN
• Yuanhong Liu · Beijing, CN
• Nan Li · Tianjin, CN

Key dates

• Filing date: Oct 17, 2011
• Grant date: Feb 2, 2016
• Expiry date: Oct 17, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/3409
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are a red light-emitting nitride material, a light-emitting part and a light-emitting device comprising the same. The General Formula of the light-emitting material is: Ma(Al,B)bSicNdOe:Eum, Rn, wherein M is at least one of the alkaline earth metal elements Mg, Ca, Sr, Ba and Zn; R is at least one of the rare earth elements Y, La, Ce, Gd and Lu; and 0.9≦a<1.1, 0.9≦b≦1, 1≦c≦1.5, 2.5<d<5, 0<e<0.1, 0<m<0.05, 0<n<0.1 and 1<c/b<1.5. The light-emitting material can be effectively excited by a radiation light having a wavelength below 500 nm, and then emits a visible red light having a wide spectrum from 500 nm to 780 nm. The light-emitting material of the present disclosure has the characteristics of high light-emitting efficiency, good temperature properties and a wide half-width etc., and the material can be used alone or in combination with other light-emitting materials for making high performance light-emitting devices.