High Color-Purity Green, Orange, and Red Light-Emitting Diodes Based on Chemically Functionalized Graphene Quantum Dots
DC Field | Value | Language |
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dc.contributor.author | Kwon, Woosung | - |
dc.contributor.author | Kim, Young-Hoon | - |
dc.contributor.author | Kim, Ji-Hee | - |
dc.contributor.author | Lee, Taehyung | - |
dc.contributor.author | Do, Sungan | - |
dc.contributor.author | Park, Yoonsang | - |
dc.contributor.author | Jeong, Mun Seok | - |
dc.contributor.author | Lee, Tae-Woo | - |
dc.contributor.author | Rhee, Shi-Woo | - |
dc.date.accessioned | 2022-07-15T17:49:40Z | - |
dc.date.available | 2022-07-15T17:49:40Z | - |
dc.date.created | 2021-05-14 | - |
dc.date.issued | 2016-04 | - |
dc.identifier.issn | 20452322 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/154799 | - |
dc.description.abstract | Chemically derived graphene quantum dots (GQDs) to date have showed very broad emission linewidth due to many kinds of chemical bondings with different energy levels, which significantly degrades the color purity and color tunability. Here, we show that use of aniline derivatives to chemically functionalize GQDs generates new extrinsic energy levels that lead to photoluminescence of very narrow linewidths. We use transient absorption and time-resolved photoluminescence spectroscopies to study the electronic structures and related electronic transitions of our GQDs, which reveals that their underlying carrier dynamics is strongly related to the chemical properties of aniline derivatives. Using these functionalized GQDs as lumophores, we fabricate light-emitting didoes (LEDs) that exhibit green, orange, and red electroluminescence that has high color purity. The maximum current efficiency of 3.47 cd A â'1 and external quantum efficiency of 1.28% are recorded with our LEDs; these are the highest values ever reported for LEDs based on carbon-nanoparticle phosphors. This functionalization of GQDs with aniline derivatives represents a new method to fabricate LEDs that produce natural color. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | High Color-Purity Green, Orange, and Red Light-Emitting Diodes Based on Chemically Functionalized Graphene Quantum Dots | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jeong, Mun Seok | - |
dc.identifier.doi | 10.1038/srep24205 | - |
dc.identifier.scopusid | 2-s2.0-84962905592 | - |
dc.identifier.wosid | 000373434400001 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.6, pp.1 - 9 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 6 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 9 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | TUNABLE PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | CARBON NANODOTS | - |
dc.subject.keywordPlus | DIODES | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | ELECTROLUMINESCENCE | - |
dc.subject.keywordPlus | LUMINESCENCE | - |
dc.subject.keywordPlus | EXTRACTION | - |
dc.subject.keywordPlus | INJECTION | - |
dc.identifier.url | https://www.nature.com/articles/srep24205 | - |
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