Conductivity mapping of graphene on polymeric films by terahertz time-domain spectroscopy

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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Conductivity mapping of graphene on polymeric films by terahertz time-domain spectroscopy. / Whelan, Patrick Rebsdorf; Huang, Deping; Mackenzie, David; Messina, Sara A.; Li, Zhancheng; Li, Xin; Li, Yunqing; Booth, Timothy J.; Jepsen, Peter Uhd; Shi, Haofei; Bøggild, Peter.

In: Optics Express, Vol. 26, No. 14, 2018, p. 17748-17754.

Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

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Author

Whelan, Patrick Rebsdorf ; Huang, Deping ; Mackenzie, David ; Messina, Sara A. ; Li, Zhancheng ; Li, Xin ; Li, Yunqing ; Booth, Timothy J. ; Jepsen, Peter Uhd ; Shi, Haofei ; Bøggild, Peter. / Conductivity mapping of graphene on polymeric films by terahertz time-domain spectroscopy. In: Optics Express. 2018 ; Vol. 26, No. 14. pp. 17748-17754.

Bibtex

@article{0f44403d63554a44acdb5e7aabc4f991,
title = "Conductivity mapping of graphene on polymeric films by terahertz time-domain spectroscopy",
abstract = "Fast inline characterization of the electrical properties of graphene on polymeric substrates is an essential requirement for quality control in industrial graphene production. Here we show that it is possible to measure the sheet conductivity of graphene on polymer films by terahertz time-domain spectroscopy (THz-TDS) when all internally reflected echoes in the substrate are taken into consideration. The conductivity measured by THz-TDS is comparable to values obtained from four point probe measurements. THz-TDS maps of 25x30 cm2 area graphene films were recorded and the DC conductivity and carrier scattering time were extracted from the measurements. Additionally, the THz-TDS conductivity maps highlight tears and holes in the graphene film, which are not easily visible by optical inspection.",
author = "Whelan, {Patrick Rebsdorf} and Deping Huang and David Mackenzie and Messina, {Sara A.} and Zhancheng Li and Xin Li and Yunqing Li and Booth, {Timothy J.} and Jepsen, {Peter Uhd} and Haofei Shi and Peter B{\o}ggild",
year = "2018",
doi = "10.1364/OE.26.017748",
language = "English",
volume = "26",
pages = "17748--17754",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "14",

}

RIS

TY - JOUR

T1 - Conductivity mapping of graphene on polymeric films by terahertz time-domain spectroscopy

AU - Whelan, Patrick Rebsdorf

AU - Huang, Deping

AU - Mackenzie, David

AU - Messina, Sara A.

AU - Li, Zhancheng

AU - Li, Xin

AU - Li, Yunqing

AU - Booth, Timothy J.

AU - Jepsen, Peter Uhd

AU - Shi, Haofei

AU - Bøggild, Peter

PY - 2018

Y1 - 2018

N2 - Fast inline characterization of the electrical properties of graphene on polymeric substrates is an essential requirement for quality control in industrial graphene production. Here we show that it is possible to measure the sheet conductivity of graphene on polymer films by terahertz time-domain spectroscopy (THz-TDS) when all internally reflected echoes in the substrate are taken into consideration. The conductivity measured by THz-TDS is comparable to values obtained from four point probe measurements. THz-TDS maps of 25x30 cm2 area graphene films were recorded and the DC conductivity and carrier scattering time were extracted from the measurements. Additionally, the THz-TDS conductivity maps highlight tears and holes in the graphene film, which are not easily visible by optical inspection.

AB - Fast inline characterization of the electrical properties of graphene on polymeric substrates is an essential requirement for quality control in industrial graphene production. Here we show that it is possible to measure the sheet conductivity of graphene on polymer films by terahertz time-domain spectroscopy (THz-TDS) when all internally reflected echoes in the substrate are taken into consideration. The conductivity measured by THz-TDS is comparable to values obtained from four point probe measurements. THz-TDS maps of 25x30 cm2 area graphene films were recorded and the DC conductivity and carrier scattering time were extracted from the measurements. Additionally, the THz-TDS conductivity maps highlight tears and holes in the graphene film, which are not easily visible by optical inspection.

U2 - 10.1364/OE.26.017748

DO - 10.1364/OE.26.017748

M3 - Journal article

VL - 26

SP - 17748

EP - 17754

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - 14

ER -