http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102719245-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0dfb750c93c0e048b5a8d74a29fe1ffd http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_53b4d53983adbf56dd0e7d0bf96f8ce5 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-64 |
| filingDate | 2012-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0977d981da20fd29f3730105a28f62f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60d75314d32317b029e66fc3184820ea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c168fd970c3f8d29efc60fe40469b98a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45db57ae32750ce65807469ff65edf1c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83b011ae338be85888f1b1af9e299db2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_99f5a976b48cb050398c066adaf920be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_894d9c7289c07c8d24e189dfdd0f0c54 |
| publicationDate | 2015-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102719245-B |
| titleOfInvention | Secondary excitation type orange-red fluorescent powder and preparation method thereof |
| abstract | The invention relates to secondary excitation type orange-red fluorescent powder and a preparation method thereof, belonging to the technical field of luminescent materials. The fluorescent powder is Sr1-a-bCa1-x-cAl2-yMexREyO4S:aEu<2+>,bDy<3+> and cTm<3+>, where Me is at least one of Zn, Cd, Mg, RE is at least one of Ga, Zn, Ge, and Si, 0<x<0.1,0<y<0.2, 0<a<0.12, 0<b<0.1, and 0<c<0.1. The design idea is that: Eu<2+> and Tm<3+> are taken as a luminescent center and Dy<3+> and the like are added to be taken as an auxiliary excitant; the light of the Eu<2+> and Tm<3+> interacts; incident light from outside excitates Eu<2+> to emit light which excitates Tm<3+> to emit light again to form a secondary excitation type light emission; the relative ratio of Eu<2+> to Tm<3+> determines the color of the emitted light; and the concentration of Dy<3+> determines the afterglow time of the secondary excitation long-afterglow fluorescent powder. The preparation method comprises the following steps: weighing each oxide raw material according to the ratio of each element in the structural formula, adding a fluxing agent into the raw materials and uniformly mixing the mixture by ball milling, placing the obtained product in a reducing atmosphere for calcinations, and crushing and screening the obtained product to obtain the required fluorescent powder. The secondary excitation type orange-red fluorescent powder can emit orange-red fluorescent light, and the afterglow time can reach 8 to 12 h. |
| priorityDate | 2012-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.