Through-substrate terahertz time-domain reflection spectroscopy for environmental graphene conductivity mapping

Lin, Hungyen and Burton, Oliver and Engelbrecht, Sebastian and Tybussek, Kai-Henning and Fischer, Bernd M. and Hofmann, Stephan (2020) Through-substrate terahertz time-domain reflection spectroscopy for environmental graphene conductivity mapping. Applied Physics Letters, 116 (2). ISSN 0003-6951

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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 vapor deposited graphene films through silicon support. We validate the technique against measurements performed using the established transmission based THz-TDS. Our through-substrate approach allows unhindered access to the graphene top surface and thus, as we discuss, opens up pathways to perform in situ and in-operando THz-TDS using environmental cells.

Item Type:
Journal Article
Journal or Publication Title:
Applied Physics Letters
Additional Information:
Copyright 2020 American Institute of Physics. The following article appeared in Applied Physics Letters, 116, (2), 2020 and may be found at http://dx.doi.org/10.1063/1.5135644 This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3101
Subjects:
ID Code:
139935
Deposited By:
Deposited On:
14 Jan 2020 16:30
Refereed?:
Yes
Published?:
Published
Last Modified:
19 Sep 2020 06:15