GB1137576A - Improvements in yttrium orthovanadate phosphor - Google Patents
Improvements in yttrium orthovanadate phosphorInfo
- Publication number
- GB1137576A GB1137576A GB5315866A GB5315866A GB1137576A GB 1137576 A GB1137576 A GB 1137576A GB 5315866 A GB5315866 A GB 5315866A GB 5315866 A GB5315866 A GB 5315866A GB 1137576 A GB1137576 A GB 1137576A
- Authority
- GB
- United Kingdom
- Prior art keywords
- yttrium
- content
- moles per
- range
- 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
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
- C09K11/7794—Vanadates; Chromates; Molybdates; Tungstates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
1,137,576. Luminescent materials. GENERAL ELECTRIC CO. 28 Nov., 1966 [29 Dec., 1965], No. 53158/66. Heading C4S. A composition consisting of (a) yttrium oxide used in the manufacture of yttrium vanadate: europium phosphors, or (b) a phosphor having the general formula Y 1-x Eu x YO 4 wherein x is from 0.01 to 0-2, is characterized in that said composition (a) or (b) contains Tb in the range from a small amount effect to improve the luminescent characteristics of (b) or the phosphors produced from (a), to up to 500 moles per million moles of the yttrium content of (a) or yttrium plus europium content of (b), e.g. at least 5 or 100 to 150 within the range 35 to 150 moles per million. The natural Tb level of Y 2 O 3 may be reduced by blending with low Tb content Y 2 O 3 and raised by mixing with Tb 4 O 7 dissolved in HNO 3 . In a preferred preparation Y 2 O 3 , Eu 2 O 3 and Tb 4 O 7 dissolved in HNO 3 are precipitated as oxalate with oxalic acid, fired to (YEuTb) 2 0 3 , Y 2 0 5 is added in amount 1 to 4 (e.g. 1.9) moles per mole of (YEuTb) 2 O 3 and refired; firing temperatures range from 700‹ to 1100‹ C. for 30 to 60 mins. Application to colour T.V. is instanced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US51748765A | 1965-12-29 | 1965-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1137576A true GB1137576A (en) | 1968-12-27 |
Family
ID=24060017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5315866A Expired GB1137576A (en) | 1965-12-29 | 1966-11-28 | Improvements in yttrium orthovanadate phosphor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS4820109B1 (en) |
| DE (1) | DE1592880B1 (en) |
| FR (1) | FR1518720A (en) |
| GB (1) | GB1137576A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337129A (en) * | 2011-07-22 | 2012-02-01 | 彩虹集团电子股份有限公司 | Red luminescent fluorescent powder for FED (Field Emission Display) and preparation method thereof |
| US8232715B2 (en) | 2007-07-05 | 2012-07-31 | Sony Corporation | Phosphor, fluorescent lamp using the same, and display device and illuminating device using fluorescent lamp |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008189761A (en) * | 2007-02-02 | 2008-08-21 | Keio Gijuku | Method for producing particulate fluorescent material |
-
1966
- 1966-11-28 GB GB5315866A patent/GB1137576A/en not_active Expired
- 1966-12-10 DE DE19661592880 patent/DE1592880B1/en active Pending
- 1966-12-27 FR FR89018A patent/FR1518720A/en not_active Expired
-
1969
- 1969-06-04 JP JP4429969A patent/JPS4820109B1/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8232715B2 (en) | 2007-07-05 | 2012-07-31 | Sony Corporation | Phosphor, fluorescent lamp using the same, and display device and illuminating device using fluorescent lamp |
| CN102337129A (en) * | 2011-07-22 | 2012-02-01 | 彩虹集团电子股份有限公司 | Red luminescent fluorescent powder for FED (Field Emission Display) and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4820109B1 (en) | 1973-06-19 |
| FR1518720A (en) | 1968-03-29 |
| DE1592880B1 (en) | 1971-04-08 |
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