ArticleScientific reports2017
Contactless graphene conductivity mapping on a wide range of substrates with terahertz time-domain reflection spectroscopy.
Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Non-Linear Conductivity Response of Graphene on Thin-Film PET Characterized by Transmission and Reflection Air-Plasma THz-TDS.Sensors (Basel, Switzerland) · 2023Article
- Systematic THz study of the substrate effect in limiting the mobility of graphene.Scientific reports · 2021Article
- Sensing Water Absorption in Hygrothermally Aged Epoxies with Terahertz Time-Domain Spectroscopy.Analytical chemistry · 2021Article
- Conductivity Extraction Using a 180 GHz Quasi-Optical Resonator for Conductive Thin Film Deposited on Conductive Substrate.Materials (Basel, Switzerland) · 2020Article
- Review of Terahertz Pulsed Imaging for Pharmaceutical Film Coating Analysis.Sensors (Basel, Switzerland) · 2020Review
- Industrial Applications of Terahertz Sensing: State of Play.Sensors (Basel, Switzerland) · 2019Review
- Contactless photomagnetoelectric investigations of 2D semiconductors.Beilstein journal of nanotechnology · 2018Article
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Authors and funding
9 authors.
Funding
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Abstract
We demonstrate how terahertz time-domain spectroscopy (THz-TDS) operating in reflection geometry can be used for quantitative conductivity mapping of large area chemical vapour deposited graphene films on sapphire, silicon dioxide/silicon and germanium. We validate the technique against measurements performed with previously established conventional transmission based THz-TDS and are able to resolve conductivity changes in response to induced back-gate voltages. Compared to the transmission geometry, measurement in reflection mode requires careful alignment and complex analysis, but circumvents the need of a terahertz transparent substrate, potentially enabling fast, contactless, in-line characterisation of graphene films on non-insulating substrates such as germanium.
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Registered trials
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