JPS57185379A - Fluorescent material - Google Patents
Fluorescent materialInfo
- Publication number
- JPS57185379A JPS57185379A JP7045881A JP7045881A JPS57185379A JP S57185379 A JPS57185379 A JP S57185379A JP 7045881 A JP7045881 A JP 7045881A JP 7045881 A JP7045881 A JP 7045881A JP S57185379 A JPS57185379 A JP S57185379A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- chromium
- fluorescent material
- formula
- gallate
- 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 provide a novel fluorescent material emitting intense red light by the excitation with a low energy electron beam, by adding a specific amount of chromium as an activating agent to a gallate-type oxide represented by a specific composition formula.
CONSTITUTION: The objective fluorescent material is obtained by adding 10-4W 10-1g (reduced to chromium oxide) of chromium to 1g of a gallate-based oxide of formula (0≤x≤1.3; 0≤y≤0.7; M is B or Al). Concretely, the above fluorescent material can be prepared by weighing zinc oxide, gallium oxide, boron oxide and aluminum oxide so as to satisfy the above formula, adding chromium oxide to the above mixture, and calcining the powdery mixture in a neutral atmosphere such as air, nitrogen, etc. or in a weakly reducing atmosphere having a hydrogen content of ≤ several % (preferably at 1,000W1,400°C for 2W4hr).
USE: A fluorescent display tube emitting red light.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7045881A JPS57185379A (en) | 1981-05-11 | 1981-05-11 | Fluorescent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7045881A JPS57185379A (en) | 1981-05-11 | 1981-05-11 | Fluorescent material |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57185379A true JPS57185379A (en) | 1982-11-15 |
Family
ID=13432086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7045881A Pending JPS57185379A (en) | 1981-05-11 | 1981-05-11 | Fluorescent material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57185379A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0222606A2 (en) * | 1985-11-13 | 1987-05-20 | Thorn Emi Plc | Improvements in or relating to infra-red phosphors |
-
1981
- 1981-05-11 JP JP7045881A patent/JPS57185379A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0222606A2 (en) * | 1985-11-13 | 1987-05-20 | Thorn Emi Plc | Improvements in or relating to infra-red phosphors |
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