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Anomalous Behaviors of Visible Luminescence from Graphene Quantum Dots: Interplay between Size and Shape
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Sung | - |
dc.contributor.author | Hwang, Sung Won | - |
dc.contributor.author | Kim, Min-Kook | - |
dc.contributor.author | Shin, Dong Yeol | - |
dc.contributor.author | Shin, Dong Hee | - |
dc.contributor.author | Kim, Chang Oh | - |
dc.contributor.author | Yang, Seung Bum | - |
dc.contributor.author | Park, Jae Hee | - |
dc.contributor.author | Hwang, Euyheon | - |
dc.contributor.author | Choi, Suk-Ho | - |
dc.contributor.author | Ko, Geunwoo | - |
dc.contributor.author | Sim, Sunghyun | - |
dc.contributor.author | Sone, Cheolsoo | - |
dc.contributor.author | Choi, Hyoung Joon | - |
dc.contributor.author | Bae, Sukang | - |
dc.contributor.author | Hong, Byung Hee | - |
dc.date.accessioned | 2021-01-31T08:27:05Z | - |
dc.date.available | 2021-01-31T08:27:05Z | - |
dc.date.created | 2020-12-11 | - |
dc.date.issued | 2012-09 | - |
dc.identifier.citation | ACS Nano, Vol.6 No.9, pp.8203-8208 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.other | 118993 | - |
dc.identifier.uri | https://hdl.handle.net/10371/172127 | - |
dc.description.abstract | For the application of graphene quantum dots (GQDs) to optoelectronic nanodevices, it is of critical importance to understand the mechanisms which result in novel phenomena of their light absorption/emission. Here, we present size-dependent shape/edge-state variations of GQDs and visible photoluminescence (PL) showing anomalous size dependences. With varying the average size (d(a)) of GQDs from 5 to 35 nm, the peak energy of the absorption spectra monotonically decreases, while that of the visible PL spectra unusually shows nonmonotonic behaviors having a minimum at d(a) = similar to 17 nm. The PL behaviors can be attributed to the novel feature of GQDs, that is, the circular-to-polygonal-shape and corresponding edge-state variations of GQDs at d(a) = similar to 17 nm as the GQD size increases, as demonstrated by high-resolution transmission electron microscopy. | - |
dc.language | 영어 | - |
dc.publisher | American Chemical Society | - |
dc.title | Anomalous Behaviors of Visible Luminescence from Graphene Quantum Dots: Interplay between Size and Shape | - |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 홍병희 | - |
dc.identifier.doi | 10.1021/nn302878r | - |
dc.citation.journaltitle | ACS Nano | - |
dc.identifier.wosid | 000309040600073 | - |
dc.identifier.scopusid | 2-s2.0-84866693492 | - |
dc.citation.endpage | 8208 | - |
dc.citation.number | 9 | - |
dc.citation.startpage | 8203 | - |
dc.citation.volume | 6 | - |
dc.identifier.sci | 000309040600073 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Hong, Byung Hee | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | RELAXATION | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | quantum dot | - |
dc.subject.keywordAuthor | size | - |
dc.subject.keywordAuthor | shape | - |
dc.subject.keywordAuthor | edge | - |
dc.subject.keywordAuthor | photoluminescence | - |
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