Rights statement: 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.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Through-substrate terahertz time-domain reflection spectroscopy for environmental graphene conductivity mapping
AU - Lin, Hungyen
AU - Burton, Oliver
AU - Engelbrecht, Sebastian
AU - Tybussek, Kai-Henning
AU - Fischer, Bernd M.
AU - Hofmann, Stephan
N1 - 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.
PY - 2020/1/13
Y1 - 2020/1/13
N2 - 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.
AB - 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.
U2 - 10.1063/1.5135644
DO - 10.1063/1.5135644
M3 - Journal article
VL - 116
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 2
M1 - 021105
ER -