JPS572388A - Fluorescent substance - Google Patents
Fluorescent substanceInfo
- Publication number
- JPS572388A JPS572388A JP7691780A JP7691780A JPS572388A JP S572388 A JPS572388 A JP S572388A JP 7691780 A JP7691780 A JP 7691780A JP 7691780 A JP7691780 A JP 7691780A JP S572388 A JPS572388 A JP S572388A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- coprecipitate
- geo
- 1w15atom
- 1w10hr
- 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
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: A novel fluorescent substance that contains Y, Ge, and Eu in a specific proportion, further including Eu3+ that replaces a part of Y, as an activator, thus emitting a red color when irradiated with electron rays or ultraviolet ones.
CONSTITUTION: The fluorescent substance is expressed by the formula: Y2O3.GeO2: Eu3+, in which the Eu trivalent ions replace the Y by 1W15atom%. In the production, for example, dried Y2O3 and GeO2 are thoroughly mixed or a coprecipitate is obtained as oxalate salts from the aqueous solution of chlorides of Y, Ge and Eu. Then, the mixture or the coprecipitate is calcined in a furnace of oxidative atmosphere, preferably in the air, at 1,100W1,500°C for 1W10hr.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7691780A JPS6014057B2 (en) | 1980-06-07 | 1980-06-07 | fluorescent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7691780A JPS6014057B2 (en) | 1980-06-07 | 1980-06-07 | fluorescent material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS572388A true JPS572388A (en) | 1982-01-07 |
JPS6014057B2 JPS6014057B2 (en) | 1985-04-11 |
Family
ID=13619036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7691780A Expired JPS6014057B2 (en) | 1980-06-07 | 1980-06-07 | fluorescent material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6014057B2 (en) |
-
1980
- 1980-06-07 JP JP7691780A patent/JPS6014057B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6014057B2 (en) | 1985-04-11 |
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