Loading patent…
AssigneeGrirem Advanced Materials Co., Ltd.
InventorsRonghui LIU, Yuanhong LIU, Huaqiang HE, Xiaowei HUANG, Wei GAO, Tao HE, Yunsheng HU, Weidong ZHUANG
Estimating the term…
An oxynitride orange-red fluorescent substance and a light-emitting film or sheet and a light-emitting device comprising the same are disclosed. The chemical formula of the oxynitride orange-red fluorescent substance is MmAaSixNyOz:dR in which the element M is one or more of the elements Ca, Sr and Ba, the element A is Al or a mixture of Al with one or more of the elements Ga, La, Sc and Y, the element R is one or more of the elements Ce, Eu and Mn, and chemical formula meets 0.8≦m≦1.2, 1<a<1.7, 1<x<1.7, 3<y<4.2, 0<z<0.7, and 0.001≦d≦0.2. The oxynitride orange-red fluorescent substance can emit orange-red light under the excitation of a radiation source, and with a relatively high luminous efficiency, the oxynitride orange-red fluorescent substance meets the demands for high color rendering performance and low color temperature of a white LED.
An oxynitride orange-red fluorescent substance, wherein a chemical formula of the fluorescent substance is MmAaSixNyOz:dR, wherein the element M is one or more of the elements selected from Ca, Sr and Ba, the element A is Al or a mixture of Al with one or more of the elements selected from Ga, La, Sc and Y, the element R is one or more of the elements selected from Ce, Eu and Mn, and chemical formula meets 0.8≦m≦1.2, 1<a<1.7, 1<x<1.7, 3<y<4.2, 0<z<0.7, and 0.001≦d≦0.2.
The oxynitride orange-red fluorescent substance according to claim 19, wherein in the powder X-ray diffraction spectrum in which Cuka rays are used, the main generation phase of the oxynitride orange-red fluorescent substance at least has a diffraction peak in Bragg angle (2θ) ranges of 31.3-31.8 degrees, 31.8-32.7 degrees, 35.2-36.2 degrees, 36.2-36.7 degrees, 36.7-37.6 degrees, 48.0-49.5 degrees and 56.0-57.2 degrees, and a peak width at half height of emission spectrum of the fluorescent substance is not below 95 nm.
Dependencies are inferred from the claim text.