Interlayer charge transfer in supported and suspended MoS.sub.2/Graphene/MoS.sub.2 vertical heterostructures
In this letter, we report on the optical and structural properties of supported and suspended MoS.sub.2 /Graphene/MoS.sub.2 vertical heterostructures using Raman and photoluminescence (PL) spectroscopies. Vertical heterostructures (VH) are formed by multiple wet transfers on micro-sized holes in SiO...
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| Veröffentlicht in: | PloS one 2023-07, Vol.18 (7), p.e0283834 |
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| creator | Rocha Robledo, Ana K Flores Salazar, Mario Muñiz Martínez, Bárbara A Torres-Rosales, Ángel A Lara-Alfaro, Héctor F Del Pozo-Zamudio, Osvaldo Cerda-Méndez, Edgar A Jiménez-Sandoval, Sergio De Luna Bugallo, Andres |
| description | In this letter, we report on the optical and structural properties of supported and suspended MoS.sub.2 /Graphene/MoS.sub.2 vertical heterostructures using Raman and photoluminescence (PL) spectroscopies. Vertical heterostructures (VH) are formed by multiple wet transfers on micro-sized holes in SiO.sub.2 /Si substrates, resulting in VH with different configurations. The strong interlayer coupling is confirmed by Raman spectroscopy. Additionally, we observe an enhancement of the PL emission in the three-layer VH (either support or suspended) compared with bare MoS.sub.2 or MoS.sub.2 /Graphene. This suggests the formation of a spatial type-II band alignment assisted by the graphene layer and thus, the operation of the VH as a n++/metal/n junction. |
| doi_str_mv | 10.1371/journal.pone.0283834 |
| format | Article |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Public Library of Science (PLoS) Journals Open Access; PubMed Central; Free Full-Text Journals in Chemistry |
| subjects | Analysis Comparative analysis Evaluation Graphene Photoluminescence Properties Raman spectroscopy |
| title | Interlayer charge transfer in supported and suspended MoS.sub.2/Graphene/MoS.sub.2 vertical heterostructures |
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