The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2019
Filed:
Nov. 16, 2015
Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Jilin, CN;
Chengyu Li, Jilin, CN;
Wenzhi Sun, Jilin, CN;
Ran Pang, Jilin, CN;
Lihong Jiang, Jilin, CN;
Su Zhang, Jilin, CN;
Abstract
This invention provides an orange-yellow-emitting phosphor, the preparation method and the use thereof. This orange-yellow-emitting phosphor has a general formula represented by formula I:SrMMg(PO)Eu  formula Iwherein in formula I, said M is one or two of Ca and Ba; and 0.001≤x≤0.9, 0≤a≤1.0, 0≤b≤2.3. This orange-yellow-emitting phosphor uses a phosphate as the host material and Euions as activation ions. The chemical properties of the phosphor are stable. The phosphor has relatively wide excitation band and emission band. And the red component in its emission spectrum is abundant, therefore, coupling the blue InGaN chip with the orange-yellow-emitting phosphor provided by this invention can obtain warm white light. The phosphor is radiation free, therefore, it will not be harmful to the environment. It is indicated by experimental results that this orange-yellow-emitting phosphor can be effectively excited by light at a wavelength of 250-500 nm and emits a wide peak at 470-850 nm, wherein the main emission peaks lie at about 523 nm and 620 nm. This preparation method is simple, and the cost is relatively low, so it is amenable to industrial production.