JPS57180688A - Production of fluorescent substance - Google Patents
Production of fluorescent substanceInfo
- Publication number
- JPS57180688A JPS57180688A JP6575481A JP6575481A JPS57180688A JP S57180688 A JPS57180688 A JP S57180688A JP 6575481 A JP6575481 A JP 6575481A JP 6575481 A JP6575481 A JP 6575481A JP S57180688 A JPS57180688 A JP S57180688A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- production
- sio
- residual
- lamp
- 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.)
- Pending
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To obtain a rare earth metal silicate fluorescent substance activated with Tb or with Ce and Tb which contains a very small amount of residual K and is excellent in performance characteristics for a lamp, by calcining a raw material mixture incorporated with KF in contact with quartz.
CONSTITUTION: In preparing a rare earth metal silicate fluorescent substance activated with Tb or with Ce and Tb, such as Y2SiO3; Tb3+ or Y2SiO3; Ce3+, Tb, a raw material mixture incorporated with KF is charged in a quartz crucible and calcined in a reducing atmosphere. A fluorescent substance containing a very small amount of residual K, excellent in performance characteristics for a lamp is obtd.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6575481A JPS57180688A (en) | 1981-04-30 | 1981-04-30 | Production of fluorescent substance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6575481A JPS57180688A (en) | 1981-04-30 | 1981-04-30 | Production of fluorescent substance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57180688A true JPS57180688A (en) | 1982-11-06 |
Family
ID=13296124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6575481A Pending JPS57180688A (en) | 1981-04-30 | 1981-04-30 | Production of fluorescent substance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57180688A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110095230A1 (en) * | 2008-03-26 | 2011-04-28 | Università Degli Studi Di Cagliari | Doped rare earths orthosilicates used as optical devices for recording information |
-
1981
- 1981-04-30 JP JP6575481A patent/JPS57180688A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110095230A1 (en) * | 2008-03-26 | 2011-04-28 | Università Degli Studi Di Cagliari | Doped rare earths orthosilicates used as optical devices for recording information |
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