Fluorescent material, method of producing the same, and light emitting device using the same
US10479935B2 · kind B2 · utility
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Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | May 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided are a fluorescent material having a high light emission intensity, a method for producing the same, and a light emitting device using the same. The present fluorescent material includes a composition represented by formula (I): SiuEuvAlwOxNy, wherein when the sum of a parameter u and a parameter w is taken as 13, parameters u, v, w, x, and y in the formula (I) satisfy the following formulae (1) to (5). 2.77≤u≤2.88 (1)0.04≤v≤0.08 (2)10.12≤w≤10.23 (3)0.42≤x≤0.95 (4)12.89≤y≤13.65 (5)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.