Exciton dynamics in monolayer graphene grown on a Cu(111) surface
We have characterized the carrier dynamics of the excitonic emission emerging from a monolayer of graphene grown on a Cu(111) surface. Excitonic emission from the graphene, with strong and sharp peaks both with a full-width at half-maximum of 2.7 meV, was observed near ~3.16 and ~3.18 eV at 4.2 K. T...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Springer Nature
2021
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| _version_ | 1797069391107457024 |
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| author | Park, Y Ying, G Taylor, RA Hwang, CC |
| author_facet | Park, Y Ying, G Taylor, RA Hwang, CC |
| author_sort | Park, Y |
| collection | OXFORD |
| description | We have characterized the carrier dynamics of the excitonic emission emerging from a monolayer of graphene grown on a Cu(111) surface. Excitonic emission from the graphene, with strong and sharp peaks both with a full-width at half-maximum of 2.7 meV, was observed near ~3.16 and ~3.18 eV at 4.2 K. The carrier recombination parameters were studied by measuring both temperature-dependent and time-resolved photoluminescence. The intensity variation with temperature of these two peaks shows an opposing trend. The time-resolved emission was modelled using coupled differential equations and the decay time was found to be dominated by carrier trapping and Auger recombination as the temperature increased. |
| first_indexed | 2024-03-06T22:23:44Z |
| format | Journal article |
| id | oxford-uuid:55f18321-f92e-4fa3-8bc6-3e284774e2f4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:23:44Z |
| publishDate | 2021 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | oxford-uuid:55f18321-f92e-4fa3-8bc6-3e284774e2f42022-03-26T16:47:19ZExciton dynamics in monolayer graphene grown on a Cu(111) surfaceJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:55f18321-f92e-4fa3-8bc6-3e284774e2f4EnglishSymplectic ElementsSpringer Nature2021Park, YYing, GTaylor, RAHwang, CCWe have characterized the carrier dynamics of the excitonic emission emerging from a monolayer of graphene grown on a Cu(111) surface. Excitonic emission from the graphene, with strong and sharp peaks both with a full-width at half-maximum of 2.7 meV, was observed near ~3.16 and ~3.18 eV at 4.2 K. The carrier recombination parameters were studied by measuring both temperature-dependent and time-resolved photoluminescence. The intensity variation with temperature of these two peaks shows an opposing trend. The time-resolved emission was modelled using coupled differential equations and the decay time was found to be dominated by carrier trapping and Auger recombination as the temperature increased. |
| spellingShingle | Park, Y Ying, G Taylor, RA Hwang, CC Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title | Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title_full | Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title_fullStr | Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title_full_unstemmed | Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title_short | Exciton dynamics in monolayer graphene grown on a Cu(111) surface |
| title_sort | exciton dynamics in monolayer graphene grown on a cu 111 surface |
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