JPS57158283A - Fluorescent substance - Google Patents
Fluorescent substanceInfo
- Publication number
- JPS57158283A JPS57158283A JP4314181A JP4314181A JPS57158283A JP S57158283 A JPS57158283 A JP S57158283A JP 4314181 A JP4314181 A JP 4314181A JP 4314181 A JP4314181 A JP 4314181A JP S57158283 A JPS57158283 A JP S57158283A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- fluorescent
- variation
- rare earth
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: A fluorescent substance exhibiting high luminance even with a large electronic current without variation in fluorescent color, which is prepd. by adding a limited ant. of erbium to a europium-activated yttrium or gadolinium oxysulfide fluorescent substance.
CONSTITUTION: A fluorescent substance of the formula (wherein M is at least a rare earth element selected from Y and Gd; 0.02≤x≤0.06; 2.2×10-6≤y≤5× 10-5). It is possible to give excellent electric current characteristics without variation in fluorescent color by the coexistence of Er. Because Er used as one component of the raw material is present in a very. small amt. as compared with the other components, homogenization is difficult by physical mixing, so that said fluorescent substance is easily obtd. by first dissolving these raw materils in a nitric acid soln., coprecipitating each rare each element as the oxalate with addition of oxalic acid, calcining the coprecipitate into the oxide and compounding the coprecipitated rare earth oxide with sulfur and a flux, followed by calcination and washing.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4314181A JPS57158283A (en) | 1981-03-26 | 1981-03-26 | Fluorescent substance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4314181A JPS57158283A (en) | 1981-03-26 | 1981-03-26 | Fluorescent substance |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57158283A true JPS57158283A (en) | 1982-09-30 |
JPS6345719B2 JPS6345719B2 (en) | 1988-09-12 |
Family
ID=12655553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4314181A Granted JPS57158283A (en) | 1981-03-26 | 1981-03-26 | Fluorescent substance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57158283A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126689A (en) * | 1984-07-14 | 1986-02-05 | Nichia Kagaku Kogyo Kk | Fluorescent material |
CN103289700A (en) * | 2012-02-28 | 2013-09-11 | 海洋王照明科技股份有限公司 | Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof |
-
1981
- 1981-03-26 JP JP4314181A patent/JPS57158283A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6126689A (en) * | 1984-07-14 | 1986-02-05 | Nichia Kagaku Kogyo Kk | Fluorescent material |
JPS6225714B2 (en) * | 1984-07-14 | 1987-06-04 | Nichia Kagaku Kogyo Kk | |
CN103289700A (en) * | 2012-02-28 | 2013-09-11 | 海洋王照明科技股份有限公司 | Europium-erbium co-doped yttrium oxysulfide luminescent material as well as preparation method and application thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6345719B2 (en) | 1988-09-12 |
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