http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101962542-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5cedae1e4103c4e3719a5e9c94c2b510 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L33-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-67 |
| filingDate | 2010-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_744bb29cc990daea4b896c881ca6ff7a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4c2f92d9c9b7641e211e55ae7afd093d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_956ed39dcb40f848b88e40f5f11a67b8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa10879b5d0a9c08b4c0977ae09acd36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d04e0f0ac3d291573e7dd0c0b2251b1 |
| publicationDate | 2013-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101962542-B |
| titleOfInvention | Niobate-based red fluorescent powder for white LED as well as preparation method and application thereof |
| abstract | The invention discloses LED niobate-based red fluorescent powder, which is characterized in that the chemical general formula thereof is M(2-2x)Nb2O7:xEu<3+>, xA<+>, wherein M is one or more of Mg, Ca, Sr and Ba; A is one or more of Li, Na, K and Rb; and x is not less than 0.10 and less than 1.00. The preparation method of the LED niobate-based red fluorescent powder comprises the following steps: weighing the raw materials according to the molar ratio of M(2-2x)Nb2O7:xEu<3+>, xA<+>, grinding and mixing uniformly; (2) roasting the mixture of step (1) in a muffle furnace at a high temperature in the air atmosphere, wherein the roasting temperature is 1,000 to 1,600 DEG C and the roasting time is 3 to 15 h; and (3) performing post-treatment on the roasted product of the step (2). The fluorescent powder can be effectively activated by near ultraviolet and blue light to emit red light and can be perfectly matched with near ultraviolet and blue LED chips; moreover, the fluorescent powder has stable physical and chemical performance, does not react with oxygen, water, carbon dioxide and the like in the environment and is heat-resistant, nontoxic and environment-friendly; and the preparation method is simple and easy to operate, adopts direct roasting in the air and has good application prospect. |
| priorityDate | 2010-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.