GB927111A - Improvements relating to luminescent materials or phosphors - Google Patents
Improvements relating to luminescent materials or phosphorsInfo
- Publication number
- GB927111A GB927111A GB1070160A GB1070160A GB927111A GB 927111 A GB927111 A GB 927111A GB 1070160 A GB1070160 A GB 1070160A GB 1070160 A GB1070160 A GB 1070160A GB 927111 A GB927111 A GB 927111A
- Authority
- GB
- United Kingdom
- Prior art keywords
- luminescent materials
- pbo
- march
- phosphors
- heating
- 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
- C09K11/66—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing germanium, tin or lead
- C09K11/666—Aluminates; Silicates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/20—Luminescent screens characterised by the luminescent material
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
927,111. Luminescent materials. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 17, 1961 [March 25, 1960], No. 10701/60. Drawings to Specification. Class 39 (1). A luminescent material which emits radiation in the erythemal region (about 3000 Š) when excited by radiation in the short U.V. region, particularly 2537 Š for use in low-pressure mercury vapour discharge lamps, consists of strontium aluminate activated by lead. The molecular proportion of SrO to Al 2 O 3 can be between 0.3 and 0.6: 1 preferably 0.4 : 1, and the molecular percentage of PbO to Al 2 O 3 can be between 2.8 and 0.7 : 1, preferably 1.4 : 1. The material is prepared by mixing SrO or Al 2 O 3 (or compounds such as SrCO 3 and Al(OH) 3 which produce the oxides on heating) with PbO or PbF 2 , heating the mixture at a temperature of between 1100‹ C. and 1200‹ C. in an oxidising atmosphere, cooling and powdering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1070160A GB927111A (en) | 1960-03-25 | 1960-03-25 | Improvements relating to luminescent materials or phosphors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1070160A GB927111A (en) | 1960-03-25 | 1960-03-25 | Improvements relating to luminescent materials or phosphors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB927111A true GB927111A (en) | 1963-05-29 |
Family
ID=9972695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1070160A Expired GB927111A (en) | 1960-03-25 | 1960-03-25 | Improvements relating to luminescent materials or phosphors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB927111A (en) |
-
1960
- 1960-03-25 GB GB1070160A patent/GB927111A/en not_active Expired
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