GB1224130A - Improvements relating to luminescent materials - Google Patents
Improvements relating to luminescent materialsInfo
- Publication number
- GB1224130A GB1224130A GB6034269A GB6034269A GB1224130A GB 1224130 A GB1224130 A GB 1224130A GB 6034269 A GB6034269 A GB 6034269A GB 6034269 A GB6034269 A GB 6034269A GB 1224130 A GB1224130 A GB 1224130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- excitation
- lithium
- zinc
- luminescent
- instanced
- 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
- C09K11/62—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing gallium, indium or thallium
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
1,224,130. Luminescent materials and uses thereof. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 10 Dec., 1969 [13 Dec., 1968], No. 60342/69. Heading C4S. A spinel structure luminescent material is of formula wherein 1#x#0, 0À95#y#0, 1#x+y and 1À20#p#0À80, e.g. 1#x+y#0À10, 1À05#p# 0À80 for U.V. excitation and 0À20#x+y#0, 1À20#p#0À95 for electron excitation. Excitation by U.V. radiation and electrons is instanced with emission maxima between 380 nm. and 470 nm. Maximum light output in zinc gallate is achieved when approximately 50% of Zn is replaced by Mg and similarly in respect of lithium gallate, highest light output being obtained with lithium zinc gallates. In preparation an excess of oxides is often preferred and may remain in the luminescent material. Preparation may include firing twice in air, oxygen or reducing atmosphere, e.g. H 2 -N 2 mixture at temperatures from 1100‹ to 1200‹ C. In examples lithium and/or zinc gallates have p=0À80, 0À92, 0À95, 1À0, 1À05, 1À08, 1À20 and specific phosphors are 0À95 (Zn x Mg (1-x )O).Ga 2 O 3 with x= 1, 0À9, 0À7, 0À5, 0À3, 0À1; 0À95 (Li( 1-y Mg y O (0 . 5+0 . 5y) 2À5-1À5 x Ga 2 O 3 with y = 0À18, 0À46, 0À67 0À82, 0À95; 0À95 (Li (1-x) Zn x O (0 . 5+0 . 5y) .(2À5 - 1À5x) Ga 2 O 3 with x=0À18, 0À46, 0À67, 0À82, 0À95; p(Li( 1-x-y) Zn x Mg y O 0 . 5(1+x+y) ) . (2À5-1À5x-1À5y) Ga 2 O 3 , wherein x is 0À40, 0À663, 0À288 or 0À221; y is 0À40, 0À221, 0À288 or 0À663 and p is 0À96, 0À96, 0À94 or 0À96 respectively. Applications to a luminescent screen, a gas discharge lamp, e.g. low pressure fluorescent lamp and cathode-ray tube of the cascade type for example are instanced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6817895A NL6817895A (en) | 1968-12-13 | 1968-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1224130A true GB1224130A (en) | 1971-03-03 |
Family
ID=19805397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6034269A Expired GB1224130A (en) | 1968-12-13 | 1969-12-10 | Improvements relating to luminescent materials |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4843030B1 (en) |
| AT (1) | AT290670B (en) |
| BE (1) | BE743010A (en) |
| DE (1) | DE1961332A1 (en) |
| FR (1) | FR2026103A1 (en) |
| GB (1) | GB1224130A (en) |
| NL (1) | NL6817895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306969A (en) * | 1995-11-07 | 1997-05-14 | Samsung Display Devices Co Ltd | Fluorescent material comprising an alkali metal gallate |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156834U (en) * | 1976-05-24 | 1977-11-29 | ||
| JPS544926U (en) * | 1977-06-14 | 1979-01-13 |
-
1968
- 1968-12-13 NL NL6817895A patent/NL6817895A/xx unknown
-
1969
- 1969-12-06 DE DE19691961332 patent/DE1961332A1/en active Pending
- 1969-12-10 JP JP9899369A patent/JPS4843030B1/ja active Pending
- 1969-12-10 AT AT1148369A patent/AT290670B/en not_active IP Right Cessation
- 1969-12-10 GB GB6034269A patent/GB1224130A/en not_active Expired
- 1969-12-11 BE BE743010D patent/BE743010A/xx unknown
- 1969-12-12 FR FR6943165A patent/FR2026103A1/fr not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306969A (en) * | 1995-11-07 | 1997-05-14 | Samsung Display Devices Co Ltd | Fluorescent material comprising an alkali metal gallate |
| GB2306969B (en) * | 1995-11-07 | 1999-02-03 | Samsung Display Devices Co Ltd | A water-soluble fluorescent material for colour picture tubes and a process for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6817895A (en) | 1970-06-16 |
| FR2026103A1 (en) | 1970-09-11 |
| DE1961332A1 (en) | 1970-07-02 |
| BE743010A (en) | 1970-06-11 |
| JPS4843030B1 (en) | 1973-12-15 |
| AT290670B (en) | 1971-06-11 |
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