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Blue Graphene Quantum Dots with High Color Purity by Controlling Subdomain Formation for Light-Emitting Devices
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yoon, Hyewon | - |
dc.contributor.author | Kim, Hyung Suk | - |
dc.contributor.author | Kim, Jungmo | - |
dc.contributor.author | Park, Minsu | - |
dc.contributor.author | Kim, Byunghoon | - |
dc.contributor.author | Lee, Sukki | - |
dc.contributor.author | Kang, Kisuk | - |
dc.contributor.author | Yoo, Seunghyup | - |
dc.contributor.author | Jeon, Seokwoo | - |
dc.date.accessioned | 2021-01-31T05:38:33Z | - |
dc.date.available | 2021-01-31T05:38:33Z | - |
dc.date.created | 2020-10-14 | - |
dc.date.created | 2020-10-14 | - |
dc.date.issued | 2020-07 | - |
dc.identifier.citation | Acs Applied Nano Materials, Vol.3 No.7, pp.6469-6477 | - |
dc.identifier.issn | 2574-0970 | - |
dc.identifier.other | 113048 | - |
dc.identifier.uri | https://hdl.handle.net/10371/171790 | - |
dc.description.abstract | As an alternative to Cd-free quantum dots (QDs), graphene quantum dots (GQDs) have potential because of their various advantages, such as color tunability, nontoxicity, cost effectiveness, and photostability. However, realization of a useful blue emission from GQDs requires a narrower full width at half-maximum (FWHM) and color purity in Commission Internationale de l'Eclairage (CIE) coordinates for display applications. These emission characteristics are strongly dependent on precise control of the sp(2) C subdomain, considered as the band-gap origin of GQDs. Here, we report a preparation for blue GQDs with improved color purity obtained from KC24 graphite intercalation compounds. The as-synthesized KC24-GQD exhibits high color purity with a photoluminescence FWHM of 70 nm and CIE coordinates of (0.159, 0.082), which can be attributed to the controlled oxidation of graphene by intercalated K ions with an arrangement of KC24 surrounding seven sp(2) C hexagons favorable for the formation of uniform subdomains. Furthermore, intrinsic emission-dominant fluorescence and phosphorescence from a powdered KC24-GQD-dispersed boron oxynitride matrix, as well as from solution-based KC24-GQD, prove its applicability to various light-emitting devices. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | Blue Graphene Quantum Dots with High Color Purity by Controlling Subdomain Formation for Light-Emitting Devices | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 강기석 | - |
dc.identifier.doi | 10.1021/acsanm.0c00930 | - |
dc.citation.journaltitle | Acs Applied Nano Materials | - |
dc.identifier.wosid | 000555518200030 | - |
dc.identifier.scopusid | 2-s2.0-85091008968 | - |
dc.citation.endpage | 6477 | - |
dc.citation.number | 7 | - |
dc.citation.startpage | 6469 | - |
dc.citation.volume | 3 | - |
dc.identifier.sci | 000555518200030 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kang, Kisuk | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | CARBON DOTS | - |
dc.subject.keywordPlus | INTERCALATION COMPOUNDS | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | ENERGY | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | ORIGIN | - |
dc.subject.keywordAuthor | graphene quantum dot | - |
dc.subject.keywordAuthor | color purity | - |
dc.subject.keywordAuthor | subdomain | - |
dc.subject.keywordAuthor | graphite intercalation compound | - |
dc.subject.keywordAuthor | intrinsic photoluminescence | - |
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