GB1498405A - Phosphors - Google Patents
PhosphorsInfo
- Publication number
- GB1498405A GB1498405A GB9883/74A GB988374A GB1498405A GB 1498405 A GB1498405 A GB 1498405A GB 9883/74 A GB9883/74 A GB 9883/74A GB 988374 A GB988374 A GB 988374A GB 1498405 A GB1498405 A GB 1498405A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- phosphors
- march
- oxides
- phosphor
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
- C09K11/7721—Aluminates
Abstract
1498405 Luminescent materials and uses thereof THORN ELECTRICAL INDUSTRIES Ltd 5 March 1975 [5 March 1974 13 Sept 1974] 9883/74 and 40085/74 Heading C4S A B-alumina structured phosphor is composed of an aluminate of Ca, Sr and/or Ba together with Zn and/or Mg, activated by Ce and/or Eu, and optionally with Mn. The matrix may conform to the formula where A=Sr (and/or Ca, Ba); B=Zn (and/or Mg), u:v=5:1 to 1:5 and (u+v):y=1:1 to 1:5. Preferred ratios and specific phosphors are detailed. Preparation may be by heating oxides of the components or compounds which decompose to the oxides and including boric acid or a borate. Some fluoride may be included. Heating may be 1100-1200 C. in nitrogen-hydrogen, and the phosphor may be reheated to 1150 C. and slowly cooled. Detailed preparations are included, and include heating in air for example. The phosphors may be used in c.r.t.s and lamps (e.g. high pHg) and excitation by u.v. (short and long), electrons and X- rays is instanced.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9883/74A GB1498405A (en) | 1974-03-05 | 1974-03-05 | Phosphors |
| DE19752509563 DE2509563A1 (en) | 1974-03-05 | 1975-03-05 | Luminescent material excited by ultra-violet or cathode rays - contg. alkaline-earths, zinc, alumina and activators |
| NL7502614A NL7502614A (en) | 1974-03-05 | 1975-03-05 | LUMINESCENT MATERIAL. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9883/74A GB1498405A (en) | 1974-03-05 | 1974-03-05 | Phosphors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1498405A true GB1498405A (en) | 1978-01-18 |
Family
ID=9880575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9883/74A Expired GB1498405A (en) | 1974-03-05 | 1974-03-05 | Phosphors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1498405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450900A (en) * | 2008-12-11 | 2013-12-18 | 财团法人工业技术研究院 | Fluorescent material, white-light light-emitting device and solar battery |
-
1974
- 1974-03-05 GB GB9883/74A patent/GB1498405A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450900A (en) * | 2008-12-11 | 2013-12-18 | 财团法人工业技术研究院 | Fluorescent material, white-light light-emitting device and solar battery |
| CN103450900B (en) * | 2008-12-11 | 2015-05-27 | 财团法人工业技术研究院 | Fluorescent material, white-light light-emitting device and solar battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940305 |