http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2236433-C2
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-77 |
| filingDate | 2001-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2004-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ba6ff75df4517306d6e0cf30c36c3d5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45099368617d327de4c2180b009cf0f8 |
| publicationDate | 2004-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2236433-C2 |
| titleOfInvention | Blue-emitting photoluminophor for gas panel screens and a method for preparation thereof |
| abstract | FIELD: optical engineering. n SUBSTANCE: blue-emitting photoluminophor intended for indicator devices is depicted by formula Ba 1-x MgEu x Al 10-y-z Sc y In z O 17 , where x = 0.01-0.2, y = 0.05-0.3, and z = 0.01-0.25. Emission band of Eu 2+ excited within wavelength range from 100 to 250 nm has spectral maximum at wavelength 450±5 nm, whose half-width rises with increased Eu 2+ concentration. Luminophor grains have oval-like rounded shape. Its great axis relates to wavelength of emitted light as 4:1 to 10:1. Average grain size is 2.8-3.0 mcm. Photoluminophor is prepared by first mixing hydroxides of elements composing photoluminophor taken in stoichiometric amounts and heated to 100 о С. Resulting mixture is pulverized with an inert gas to fine state and then calcined at 1350-1550 о С for 1 to 5 h in weakly reducing atmosphere. Thermally treated photoluminophor is coated with magnesium silicate film by allowing luminophor grains to react with composition containing Mg(OH) 2 and H 2 SiO 3 , whereupon grains are dried 1-3 h at 140 о С. Thus obtained photoluminophor has stable color coordinates x ≤ 0.155, y ≤ 0.06. It is hydrolytically stable, long-lasting, capable of incessantly working in gas panels and has high initial brightness. n EFFECT: improved performance characteristics. n 3 cl, 1 tbl, 3 ex |
| priorityDate | 2001-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.