Strong and efficient doping of monolayer MoS2 by a graphene electrode

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00511370" target="_blank" >RIV/61388955:_____/19:00511370 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0301653" target="_blank" >http://hdl.handle.net/11104/0301653</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/C9CP04993B" target="_blank" >10.1039/C9CP04993B</a>

Result language
angličtina
Original language name
Strong and efficient doping of monolayer MoS2 by a graphene electrode
Original language description
The efficient manipulation of the optoelectronic properties of layered semiconductors is essential for future applications of these unique materials. Here, we demonstrate that single-layer, large-area graphene can serve as a conductive spacer between an electrolyte solution and single-layer MoS2. In situ Raman and photoluminescence (PL) spectroscopies were employed to monitor the charge transfer from graphene to MoS2. The Raman G and 2D bands were used to quantify the carrier concentration in graphene. The high efficiency of the charge transfer via graphene in a broad carrier concentration range of ±2.1 × 1013 cm−2 was documented by the extreme sensitivity of the MoS2 Raman Image ID:c9cp04993b-t1.gif mode to the electron-doping (shift rate of ∼2.5 cm−1/1 × 1013 cm−2 electron concentration) and the high sensitivity of the PL yield, which drops by more than one and two orders of magnitude in the hole and electron doping regimes, respectively. The easy implementation, and the lithography-free effectiveness of the setup, in terms of the achievable carrier concentration range and the charge-transfer efficiency, could be an asset in near-future research and in the development of optoelectronic devices.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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