Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements

Xiaoyu Jia; Klaas-Jan Tielrooij; Mischa Bonn; Hai I. Wang

doi:10.1109/IRMMW-THz.2019.8874148

Ionic permeability and interfacial doping of graphene on SiO₂ measured with Terahertz photoconductivity measurements

Xiaoyu Jia
, Klaas-Jan Tielrooij
, Mischa Bonn
, Hai I. Wang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

Graphene has been widely used in various electrochemical applications owing to its outstanding electrical and chemical properties. The presence of electrolyte at the graphene surfaces affects graphene's electronic properties, especially its electrical conductivity. The precise mechanism underlying the graphene-electrolyte interaction has remained elusive, despite the importance of graphene for electrochemical applications. Here, we employ optical-pump THz-probe spectroscopy as a contact-free and all-optical means to investigate the impact of cations on graphene conductivity in the electrolyte. We reveal ionic permeability though graphene, resulting in an interfacial doping effect in SiO₂-supported graphene.

Original language	English
Title of host publication	IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
Publisher	Institute of Electrical and Electronics Engineers
Number of pages	1
ISBN (Electronic)	978-1-5386-8285-2
DOIs	https://doi.org/10.1109/IRMMW-THz.2019.8874148
Publication status	Published - 21 Oct 2019
Externally published	Yes
Event	44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France Duration: 1 Sept 2019 → 6 Sept 2019 Conference number: 44

Conference

Conference	44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
Abbreviated title	IRMMW-THz
Country/Territory	France
City	Paris
Period	1/09/19 → 6/09/19

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10.1109/IRMMW-THz.2019.8874148

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Jia, X., Tielrooij, K.-J., Bonn, M., & Wang, H. I. (2019). Ionic permeability and interfacial doping of graphene on SiO₂ measured with Terahertz photoconductivity measurements. In IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves Article 8874148 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IRMMW-THz.2019.8874148

@inproceedings{fe440722841140a1b4ddad808285f338,

title = "Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements",

abstract = "Graphene has been widely used in various electrochemical applications owing to its outstanding electrical and chemical properties. The presence of electrolyte at the graphene surfaces affects graphene's electronic properties, especially its electrical conductivity. The precise mechanism underlying the graphene-electrolyte interaction has remained elusive, despite the importance of graphene for electrochemical applications. Here, we employ optical-pump THz-probe spectroscopy as a contact-free and all-optical means to investigate the impact of cations on graphene conductivity in the electrolyte. We reveal ionic permeability though graphene, resulting in an interfacial doping effect in SiO2-supported graphene.",

author = "Xiaoyu Jia and Klaas-Jan Tielrooij and Mischa Bonn and Wang, \{Hai I.\}",

year = "2019",

month = oct,

day = "21",

doi = "10.1109/IRMMW-THz.2019.8874148",

language = "English",

booktitle = "IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

note = "44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019, IRMMW-THz ; Conference date: 01-09-2019 Through 06-09-2019",

}

Jia, X, Tielrooij, K-J, Bonn, M & Wang, HI 2019, Ionic permeability and interfacial doping of graphene on SiO₂ measured with Terahertz photoconductivity measurements. in IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves., 8874148, Institute of Electrical and Electronics Engineers, 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019, Paris, France, 1/09/19. https://doi.org/10.1109/IRMMW-THz.2019.8874148

Ionic permeability and interfacial doping of graphene on SiO₂ measured with Terahertz photoconductivity measurements. / Jia, Xiaoyu; Tielrooij, Klaas-Jan; Bonn, Mischa et al.
IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves. Institute of Electrical and Electronics Engineers, 2019. 8874148.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements

AU - Jia, Xiaoyu

AU - Tielrooij, Klaas-Jan

AU - Bonn, Mischa

AU - Wang, Hai I.

N1 - Conference code: 44

PY - 2019/10/21

Y1 - 2019/10/21

N2 - Graphene has been widely used in various electrochemical applications owing to its outstanding electrical and chemical properties. The presence of electrolyte at the graphene surfaces affects graphene's electronic properties, especially its electrical conductivity. The precise mechanism underlying the graphene-electrolyte interaction has remained elusive, despite the importance of graphene for electrochemical applications. Here, we employ optical-pump THz-probe spectroscopy as a contact-free and all-optical means to investigate the impact of cations on graphene conductivity in the electrolyte. We reveal ionic permeability though graphene, resulting in an interfacial doping effect in SiO2-supported graphene.

AB - Graphene has been widely used in various electrochemical applications owing to its outstanding electrical and chemical properties. The presence of electrolyte at the graphene surfaces affects graphene's electronic properties, especially its electrical conductivity. The precise mechanism underlying the graphene-electrolyte interaction has remained elusive, despite the importance of graphene for electrochemical applications. Here, we employ optical-pump THz-probe spectroscopy as a contact-free and all-optical means to investigate the impact of cations on graphene conductivity in the electrolyte. We reveal ionic permeability though graphene, resulting in an interfacial doping effect in SiO2-supported graphene.

UR - https://www.scopus.com/pages/publications/85074720166

U2 - 10.1109/IRMMW-THz.2019.8874148

DO - 10.1109/IRMMW-THz.2019.8874148

M3 - Conference contribution

AN - SCOPUS:85074720166

BT - IRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves

PB - Institute of Electrical and Electronics Engineers

T2 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019

Y2 - 1 September 2019 through 6 September 2019

ER -

Ionic permeability and interfacial doping of graphene on SiO₂ measured with Terahertz photoconductivity measurements

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