ES255257A1 - Improvements in or relating to luminescent materials - Google Patents
Improvements in or relating to luminescent materialsInfo
- Publication number
- ES255257A1 ES255257A1 ES0255257A ES255257A ES255257A1 ES 255257 A1 ES255257 A1 ES 255257A1 ES 0255257 A ES0255257 A ES 0255257A ES 255257 A ES255257 A ES 255257A ES 255257 A1 ES255257 A1 ES 255257A1
- Authority
- ES
- Spain
- Prior art keywords
- gallium nitride
- gallium
- activator
- lithium
- coactivators
- 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
-
- 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
-
- 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
- C09K11/0883—Arsenides; Nitrides; Phosphides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
A luminescent material excited by ultra-violet radiation or cathode-rays comprises gallium nitride containing as activator at least one of Li, Na, Cu, Ag, Au, Be, Mg, Ca, Sr, Ba, Zn, Cd, Hg, Al, In, Tl, Sn and Pb in the proportion of 10-5 to 10-2 mol. of activating element per mol. of gallium nitride. Coactivators can be incorporated comprising at least one of O, S, Se, Te and F in the proportion of 10-5 to 10-2 mol. of coactivating element per mol. of gallium nitride. In one process of preparation gallium or a material containing gallium is heated in an ammonia atmosphere to a temperature between 300 DEG C. and 1200 DEG C. for a period of from 5 minutes to 10 hours in the presence of one or more activators with or without one or more coactivators. In another process an alloy of lithium, and gallium in substantially equal molecular amounts is heated in an ammonia atmosphere to a temperature between 300 DEG C. and 700 DEG C. for a period of time such that an amount of lithium effective as activator is left in the gallium nitride formed. At least one other activator can be present with or without one or more coactivators. In a further process lithium-gallium nitride is heated in an ammonia atmosphere to a temperature between 700 DEG C. and 1000 DEG C. for a time such that an amount of lithium effective as activator is left in the gallium nitride formed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN16182A DE1077330B (en) | 1959-01-28 | 1959-01-28 | Radiation source with a phosphor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES255257A1 true ES255257A1 (en) | 1960-09-01 |
Family
ID=7340155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES0255257A Expired ES255257A1 (en) | 1959-01-28 | 1960-01-25 | Improvements in or relating to luminescent materials |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE586953A (en) |
| CH (1) | CH387796A (en) |
| DE (1) | DE1077330B (en) |
| DK (1) | DK94683C (en) |
| ES (1) | ES255257A1 (en) |
| FR (1) | FR1246534A (en) |
| GB (1) | GB946764A (en) |
-
1959
- 1959-01-28 DE DEN16182A patent/DE1077330B/en active Pending
-
1960
- 1960-01-25 CH CH80060A patent/CH387796A/en unknown
- 1960-01-25 ES ES0255257A patent/ES255257A1/en not_active Expired
- 1960-01-25 GB GB262860A patent/GB946764A/en not_active Expired
- 1960-01-25 DK DK27560A patent/DK94683C/en active
- 1960-01-26 BE BE586953A patent/BE586953A/en unknown
- 1960-01-27 FR FR816820A patent/FR1246534A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH387796A (en) | 1965-02-15 |
| FR1246534A (en) | 1960-11-18 |
| GB946764A (en) | 1964-01-15 |
| BE586953A (en) | 1960-07-26 |
| DE1077330B (en) | 1960-03-10 |
| DK94683C (en) | 1962-11-05 |
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