GB1110290A - Europium-activated yttrium-gadolinium oxide type phosphors - Google Patents
Europium-activated yttrium-gadolinium oxide type phosphorsInfo
- Publication number
- GB1110290A GB1110290A GB1818266A GB1818266A GB1110290A GB 1110290 A GB1110290 A GB 1110290A GB 1818266 A GB1818266 A GB 1818266A GB 1818266 A GB1818266 A GB 1818266A GB 1110290 A GB1110290 A GB 1110290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- europium
- gadolinium oxide
- halides
- excitation
- 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
- -1 Europium-activated yttrium-gadolinium oxide Chemical class 0.000 title abstract 3
- 229910052693 Europium Inorganic materials 0.000 title abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 3
- 230000005284 excitation Effects 0.000 abstract 3
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 abstract 3
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- 229910052793 cadmium Inorganic materials 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 230000004907 flux Effects 0.000 abstract 2
- 150000004820 halides Chemical class 0.000 abstract 2
- 229910052738 indium Inorganic materials 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 229910052712 strontium Inorganic materials 0.000 abstract 2
- 229910052725 zinc Inorganic materials 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052788 barium Inorganic materials 0.000 abstract 1
- 229910052794 bromium Inorganic materials 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 150000002178 europium compounds Chemical class 0.000 abstract 1
- 229910001938 gadolinium oxide Inorganic materials 0.000 abstract 1
- 229940075613 gadolinium oxide Drugs 0.000 abstract 1
- 229910052733 gallium Inorganic materials 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229910052740 iodine Inorganic materials 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
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
- C09K11/7784—Chalcogenides
- C09K11/7787—Oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
Europium activated yttrium - gadolinium oxide type phosphors are manufactured by employing yttrium oxide and/or gadolinium oxide as host, adding suitable europium compounds, the Eu content preferably being 0.01 to 0.2 gram atom per 1 mol of Y2O3 or Gd2O3, further adding as fluxes at least one of the ammonium halides other than ammonium flouride and metal element halides, preferably 1 to 10 mol per cent for cathode ray excitation and 5 to 100 mol per cent for U.V. excitation, grinding resulting mixture, then heating to at least 1000 DEG C., the higher the better, suitably 1200 DEG C., for from 10 mins. to several hours, preferably 2 hours. Ten examples of preparation are described with a wide variety of starting materials including compounds of Y, Gd, Eu, Cl, Br, I, Ba, Na, Zn, Ca, Mg, Cd, Sr, Al and In, one phosphor prepared having emission peaks at 6115<\>rA and 6130<\>rA. Detailed comparisons are given of the fluorescence efficiencies of phosphors with various fluxes and varying amounts of Y2O3 and Gd2O3. The halides of metals disclosed are those Na, K, Ca, Sr, Ba, Mg, Zn, Cd, Al, Ga, In in monovalent or trivalent states for example. The phosphor is considered suitable for fluorescent lamps, fluorescent high pressure mercury discharge tubes, and as the red phosphor in colour television. Excitation frequencies of 2537<\>rA and 3650<\>rA are instanced.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2518365 | 1965-04-30 | ||
| JP2615465 | 1965-05-06 | ||
| JP2640565 | 1965-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1110290A true GB1110290A (en) | 1968-04-18 |
Family
ID=27284923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1818266A Expired GB1110290A (en) | 1965-04-30 | 1966-04-26 | Europium-activated yttrium-gadolinium oxide type phosphors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1110290A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0935814B1 (en) * | 1997-06-11 | 2004-07-21 | Koninklijke Philips Electronics N.V. | Fluorescent lamp using special phosphor blend |
| US6827877B2 (en) | 2003-01-28 | 2004-12-07 | Osram Sylvania Inc. | Red-emitting phosphor blend for plasma display panels |
| EP1778587A4 (en) * | 2004-07-29 | 2010-01-20 | Lg Chemical Ltd | CERIUM OXIDE POWDER AND PROCESS FOR PRODUCING THE SAME |
| US20120032114A1 (en) * | 2010-08-03 | 2012-02-09 | Kim Young-Ki | Red phosphor and plasma display panel including same |
| CN104130778A (en) * | 2014-08-01 | 2014-11-05 | 宜兴银茂荧光材料有限公司 | Preparation method of superfine fluorescent powder |
-
1966
- 1966-04-26 GB GB1818266A patent/GB1110290A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0935814B1 (en) * | 1997-06-11 | 2004-07-21 | Koninklijke Philips Electronics N.V. | Fluorescent lamp using special phosphor blend |
| US6827877B2 (en) | 2003-01-28 | 2004-12-07 | Osram Sylvania Inc. | Red-emitting phosphor blend for plasma display panels |
| EP1778587A4 (en) * | 2004-07-29 | 2010-01-20 | Lg Chemical Ltd | CERIUM OXIDE POWDER AND PROCESS FOR PRODUCING THE SAME |
| US8029754B2 (en) | 2004-07-29 | 2011-10-04 | Lg Chem, Ltd. | Cerium oxide powder and process for producing the same |
| US20120032114A1 (en) * | 2010-08-03 | 2012-02-09 | Kim Young-Ki | Red phosphor and plasma display panel including same |
| US8147716B2 (en) * | 2010-08-03 | 2012-04-03 | Samsung Sdi Co., Ltd. | Red phosphor and plasma display panel including same |
| CN104130778A (en) * | 2014-08-01 | 2014-11-05 | 宜兴银茂荧光材料有限公司 | Preparation method of superfine fluorescent powder |
| CN104130778B (en) * | 2014-08-01 | 2015-11-11 | 宜兴银茂荧光材料有限公司 | superfine fluorescent powder preparation method |
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