GB963475A - Improvements in or relating to luminescent materials - Google Patents
Improvements in or relating to luminescent materialsInfo
- Publication number
- GB963475A GB963475A GB2049260A GB2049260A GB963475A GB 963475 A GB963475 A GB 963475A GB 2049260 A GB2049260 A GB 2049260A GB 2049260 A GB2049260 A GB 2049260A GB 963475 A GB963475 A GB 963475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- starting materials
- phosphate
- nitrogen
- relating
- luminescent
- 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
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
- C09K11/71—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing alkaline earth metals
Abstract
A luminescent phosphate activated by monovalent copper and bivalent tin is represented by the formula <FORM:0963475/C4-C5/1> wherein M represents one or more of Al, Mg, Zn, Cd and B and x, y, z, p and q are subject to specified conditions. Starting materials comprising compounds of Sr, Cu and Sn and of at least one of the elements Al, Mg, Zn, Cd and B, and of P are heated in a non-oxidizing atmosphere, such as nitrogen or nitrogen and hydrogen, at between 1000 DEG C. and 1250 DEG C. for 1 to 2 hours. The element Sr and the phosphate group can be introduced as a mixture of strontium hydrogen phosphate and strontium carbonate in the starting materials. The Cu can be introduced as copper sulphate in the starting materials. A layer of the luminescent material can be used in combination with a mercury vapour discharge tube. Several specific examples are described and their spectral emission curves given. Specification 925,709 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL240168 | 1959-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB963475A true GB963475A (en) | 1964-07-08 |
Family
ID=19751774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2049260A Expired GB963475A (en) | 1959-06-12 | 1960-06-10 | Improvements in or relating to luminescent materials |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH407321A (en) |
| ES (1) | ES258772A1 (en) |
| GB (1) | GB963475A (en) |
-
1960
- 1960-06-09 ES ES0258772A patent/ES258772A1/en not_active Expired
- 1960-06-09 CH CH655660A patent/CH407321A/en unknown
- 1960-06-10 GB GB2049260A patent/GB963475A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH407321A (en) | 1966-02-15 |
| ES258772A1 (en) | 1960-12-01 |
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