Analytical Approach to Study Sensing Properties of Graphene Based Gas Sensor

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dc.contributor.authorHosseingholipourasl, Ali
dc.contributor.authorAriffin, Sharifah Hafizah Syed
dc.contributor.authorAl-Otaibi, Yasser D.
dc.contributor.authorAkbari, Elnaz
dc.contributor.authorHamid, Fatimah K. H.
dc.contributor.authorRahimian Koloor, Seyed Saeid
dc.contributor.authorPetrů, Michal
dc.date.accessioned2020-04-24T09:11:07Z
dc.date.available2020-04-24T09:11:07Z
dc.date.issued2020-03
dc.description.abstractOver the past years, carbon-based materials and especially graphene, have always been known as one of the most famous and popular materials for sensing applications. Graphene poses outstanding electrical and physical properties that make it favorable to be used as a transducer in the gas sensors structure. Graphene experiences remarkable changes in its physical and electrical properties when exposed to various gas molecules. Therefore, in this study, a set of new analytical models are developed to investigate energy band structure, the density of states (DOS), the velocity of charged carriers and I-V characteristics of the graphene after molecular (CO, NO2, H2O) adsorption. The results show that gas adsorption modulates the energy band structure of the graphene that leads to the variation of the energy bandgap, thus the DOS changes. Consequently, graphene converts to semiconducting material, which affects the graphene conductivity and together with the DOS variation, modulate velocity and I-V characteristics of the graphene. These parameters are important factors that can be implemented as sensing parameters and can be used to analyze and develop new sensors based on graphene material.cs
dc.format.extent14 strancs
dc.identifier.doi10.3390/s20051506
dc.identifier.orcid0000-0002-1820-6379 Rahimian Koloor, Seyed Saeid
dc.identifier.orcid0000-0002-7643-8450 Petrů, Michal
dc.identifier.orcidG-6623-2013 Petrů, Michal
dc.identifier.urihttps://dspace.tul.cz/handle/15240/154764
dc.identifier.urihttps://www.mdpi.com/1424-8220/20/5/1506
dc.language.isocscs
dc.publisherMDPI
dc.relation.ispartofSensors
dc.subjectgraphenecs
dc.subjectgas sensorcs
dc.subjectadsorptioncs
dc.subjectI-V characteristicscs
dc.subjectanalytical modelingcs
dc.titleAnalytical Approach to Study Sensing Properties of Graphene Based Gas Sensorcs
local.accessopen access
local.article.number1506
local.identifier.publikace7387
local.relation.issue5
local.relation.volume20
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