Metallurgical graphene under different gas atmospheres and UV radiation for gas-sensing applications

Metallurgical graphene under different gas atmospheres and UV radiation for gas-sensing applications

[Display omitted] •Impact of 5 gases and UV radiation on electrical resistance of graphene was tested.•Virgin metallurgical graphene and graphene annealed after transfer were tested.•Hydrogen resulted in the biggest impact on graphene resistance.•Annealing resulted in decreased graphene susceptibili...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. Vol. 312; p. 112152
Main Authors: Gaj, Justyna, Clapa, Marian, Nowak, Dorota, Juszczak, Jaroslaw, Galazka, Maciej, Pelka, Marcin, Niedzielski, Piotr
Format: Journal Article
Language:English
Published: Lausanne Elsevier B.V 01-09-2020
Elsevier BV
Subjects:
Annealing
Atmospheres
Electric properties
Electrical properties
Gas detectors
Gas sensing
Graphene
Impact resistance
Metallurgy
Radiation tolerance
Resistance
Ultraviolet light
Ultraviolet radiation
Resistance
Annealing
Ultraviolet light
Gas sensing
Graphene
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Summary:[Display omitted] •Impact of 5 gases and UV radiation on electrical resistance of graphene was tested.•Virgin metallurgical graphene and graphene annealed after transfer were tested.•Hydrogen resulted in the biggest impact on graphene resistance.•Annealing resulted in decreased graphene susceptibility to UV radiation. Due to two-dimensional lattice and unique electrical properties graphene is a material of interest in gas-sensing applications. In contrast to theoretical structure, real-life graphene contains numerous defects that modify its properties. The aim of the following study was to compare the influence of five different gaseous atmospheres and UV radiation on the electrical resistance of metallurgical graphene (HSMG®). Samples of virgin graphene and graphene annealed after transfer were used. Among the tested gases, hydrogen atmosphere showed the biggest impact on graphene resistance. The annealing step meant to cleanse graphene from process residues resulted in decreased graphene susceptibility to UV radiation.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2020.112152