http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108192608-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01L33-502 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7769 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01L33-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-78 |
| filingDate | 2018-01-29^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108192608-B |
| titleOfInvention | Preparation method of yellow perovskite fluorescent powder for ultraviolet light-emitting diode, product and application thereof |
| abstract | The invention provides a preparation method of yellow perovskite fluorescent powder for an ultraviolet light-emitting diode, a product and application thereof, wherein lanthanum salt, ferric salt and cobalt salt are added into deionized water to be stirred and dissolved, and cerium salt is added to obtain a solution A; wetting the mixed di-chelating agent by adding a small amount of deionized water, adding ammonia water, adding the solution of the di-chelating agent into the solution A to obtain a solution B, and heating and stirring the solution B until gel is formed; heating to form a black porous xerogel; and grinding the obtained black xerogel into powder, and calcining to obtain the target product. Synthesis of Ce using modified sol-gel 3+ The doped perovskite is in a three-dimensional network structure, has a large specific surface area and more surface states, can contain more luminescent centers and has higher luminous efficiency. The obtained powder has obvious light emission at 550 nm under the excitation of ultraviolet 372 nm, and the light-emitting efficiency is 65%. The preparation process is relatively simple and easy to operate. |
| priorityDate | 2018-01-29^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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