Environmental Graphene Conductivity Sensing Using Terahertz Time-Domain Reflection Spectroscopy

Hungyen Lin,Oliver J. Burton,Sebastian Engelbrecht,Kai-Henning Tybussek,Bernd M. Fischer,Stephan Hofmann

2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)（2020）

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摘要

We demonstrate how reflection terahertz time-domain spectroscopy (THz-TDS) can be used to measure conductivity of large area graphene films through silicon substrate. This through-substrate approach in turn allows an unhindered access to the graphene top surface and thus, opens up pathways to perform in situ and in-operando THz-TDS using environmental cells.

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关键词

environmental graphene conductivity sensing,terahertz time-domain reflection spectroscopy,reflection terahertz time-domain spectroscopy,area graphene films,silicon substrate,through-substrate approach,graphene top surface,in-operando THz-TDS,environmental cells

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