http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109929551-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-68 |
| filingDate | 2019-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109929551-B |
| titleOfInvention | Non-stoichiometric zinc tungstate red fluorescent powder and preparation method thereof |
| abstract | The invention discloses a non-stoichiometric zinc tungstate red fluorescent powder, the chemical formula of which is Zn (WO) 4 ) x :0.05Eu 3+ Wherein n (Zn) 2+ +Eu 3+ ):n(WO 4 2‑ ) The red fluorescent powder of zinc tungstate is prepared by a hydrothermal method, wherein x is 1: x, and x is 3-11, the preparation method has strong operability and simple process flow; the XRD pattern result shows that ZnWO is changed 4 Zn in matrix 2+ And WO 4 2— The original phase structure of the fluorescent powder has ZnWO in stoichiometric ratio 4 Phase, WO 3 Phase and WO 3 ·0.5H 2 An O phase; SEM picture shows that the appearance of the fluorescent powder is composed of nanometer short rods and WO with a two-dimensional sheet structure 3 ‑WO 3 ·0.5H 2 O composition, and TEM images show defects in the two-dimensional sheet structure with LSPR effect that will enhance the luminescence intensity; n (Zn) 2+ +Eu 3+ ):n(WO 4 2‑ ) 1:7, and the ratio of luminous intensity of the white phosphor to that of ZnWO under the excitation of 394nm ultraviolet light 4 :0.05Eu 3+ The luminous intensity of the fluorescent powder is enhanced by 4.67 times; the luminous intensity ratio of ZnWO is excited by 466nm ultraviolet light 4 :0.05Eu 3+ The luminous intensity of the fluorescent powder is enhanced by 7.36 times. |
| priorityDate | 2019-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.