Contactless probing of graphene charge density variation in a controlled humidity environment

Physics

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

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Contactless probing of graphene charge density variation in a controlled humidity environment. / Brown, K.; Vincent, T.; Castanon, E.G. et al.
In: Carbon, Vol. 163, 15.08.2020, p. 408-416.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Brown, K, Vincent, T, Castanon, EG, Rus, FS, Melios, C, Kazakova, O & Giusca, CE 2020, 'Contactless probing of graphene charge density variation in a controlled humidity environment', Carbon, vol. 163, pp. 408-416. https://doi.org/10.1016/j.carbon.2020.03.037

APA

Brown, K., Vincent, T., Castanon, E. G., Rus, F. S., Melios, C., Kazakova, O., & Giusca, C. E. (2020). Contactless probing of graphene charge density variation in a controlled humidity environment. Carbon, 163, 408-416. https://doi.org/10.1016/j.carbon.2020.03.037

Vancouver

Brown K, Vincent T, Castanon EG, Rus FS, Melios C, Kazakova O et al. Contactless probing of graphene charge density variation in a controlled humidity environment. Carbon. 2020 Aug 15;163:408-416. Epub 2020 Mar 18. doi: 10.1016/j.carbon.2020.03.037

Author

Brown, K. ; Vincent, T. ; Castanon, E.G. et al. / Contactless probing of graphene charge density variation in a controlled humidity environment. In: Carbon. 2020 ; Vol. 163. pp. 408-416.

Bibtex

@article{0654f57e771a468c9f6a3851ea6f4036,

title = "Contactless probing of graphene charge density variation in a controlled humidity environment",

abstract = "The electronic properties of graphene are highly sensitive to atoms and molecules adsorbed on its surface and to changes in its environment, such as temperature and humidity. In this paper, we examine the effect of humidity on the local carrier concentration of different types of graphene prepared by mechanical exfoliation, chemical vapour deposition and epitaxial growth on SiC, using in-situ Raman spectroscopy. We present a systematic and comparative study of the changes in Raman response using a vector analysis method to produce spatial maps of doping variation as a function of humidity. We also quantify the humidity induced carrier concentration change for different types of graphene. This study illustrates the effects of humidity on the electronic properties of graphene and provides a simple, contactless and quantitative method to directly evaluate water-induced doping effects in graphene, that are crucial for tailored device performance.",

keywords = "Carrier concentration, Chemical vapor deposition, Electronic properties, Humidity control, Silicon carbide, Chemical vapour deposition, Comparative studies, Controlled humidities, Electronic properties of graphene, In-situ Raman spectroscopy, Mechanical exfoliation, Quantitative method, Temperature and humidities, Graphene",

author = "K. Brown and T. Vincent and E.G. Castanon and F.S. Rus and C. Melios and O. Kazakova and C.E. Giusca",

year = "2020",

month = aug,

day = "15",

doi = "10.1016/j.carbon.2020.03.037",

language = "English",

volume = "163",

pages = "408--416",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Contactless probing of graphene charge density variation in a controlled humidity environment

AU - Brown, K.

AU - Vincent, T.

AU - Castanon, E.G.

AU - Rus, F.S.

AU - Melios, C.

AU - Kazakova, O.

AU - Giusca, C.E.

PY - 2020/8/15

Y1 - 2020/8/15

N2 - The electronic properties of graphene are highly sensitive to atoms and molecules adsorbed on its surface and to changes in its environment, such as temperature and humidity. In this paper, we examine the effect of humidity on the local carrier concentration of different types of graphene prepared by mechanical exfoliation, chemical vapour deposition and epitaxial growth on SiC, using in-situ Raman spectroscopy. We present a systematic and comparative study of the changes in Raman response using a vector analysis method to produce spatial maps of doping variation as a function of humidity. We also quantify the humidity induced carrier concentration change for different types of graphene. This study illustrates the effects of humidity on the electronic properties of graphene and provides a simple, contactless and quantitative method to directly evaluate water-induced doping effects in graphene, that are crucial for tailored device performance.

AB - The electronic properties of graphene are highly sensitive to atoms and molecules adsorbed on its surface and to changes in its environment, such as temperature and humidity. In this paper, we examine the effect of humidity on the local carrier concentration of different types of graphene prepared by mechanical exfoliation, chemical vapour deposition and epitaxial growth on SiC, using in-situ Raman spectroscopy. We present a systematic and comparative study of the changes in Raman response using a vector analysis method to produce spatial maps of doping variation as a function of humidity. We also quantify the humidity induced carrier concentration change for different types of graphene. This study illustrates the effects of humidity on the electronic properties of graphene and provides a simple, contactless and quantitative method to directly evaluate water-induced doping effects in graphene, that are crucial for tailored device performance.

KW - Carrier concentration

KW - Chemical vapor deposition

KW - Electronic properties

KW - Humidity control

KW - Silicon carbide

KW - Chemical vapour deposition

KW - Comparative studies

KW - Controlled humidities

KW - Electronic properties of graphene

KW - In-situ Raman spectroscopy

KW - Mechanical exfoliation

KW - Quantitative method

KW - Temperature and humidities

KW - Graphene

U2 - 10.1016/j.carbon.2020.03.037

DO - 10.1016/j.carbon.2020.03.037

M3 - Journal article

VL - 163

SP - 408

EP - 416

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -

Research

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