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나노 구조 물리 연구단
나노구조물리 연구단
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Gas adsorbates are Coulomb scatterers, rather than neutral ones, in a monolayer MoS2 field effect transistor

DC Field Value Language
dc.contributor.authorHyunjin Ji-
dc.contributor.authorHojoon Yi-
dc.contributor.authorJinbong Seok-
dc.contributor.authorHyun Kim-
dc.contributor.authorYoung Hee Lee-
dc.contributor.authorSeong Chu Lim-
dc.date.available2019-02-12T11:05:03Z-
dc.date.created2018-07-23-
dc.date.issued2018-06-
dc.identifier.issn2040-3364-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/5566-
dc.description.abstractDirect current (DC) and low-frequency (LF) noise analyses of a chemical vapor deposition (CVD)-grown monolayer MoS2 field effect transistor (FET) indicate that time-varying carrier perturbations originate from gas adsorbates. The LF noise analysis supports that the natural desorption of physisorbed gas molecules, water and oxygen, largely reduces the interface trap density (N-ST) under vacuum conditions (approximate to 10(-8) Torr) for 2 weeks. After a longer period of 8 months under vacuum, the carrier scattering mechanism alters, in particular for the low carrier density (N-acc) region. A decrease of both N-ST and the scattering parameter (SC) with desorption of surface adsorbates from MoS2, explains the enhanced carrier mobility and the early turn-on of the device. The stabilized carrier behavior is verified with = 0.5 in the formula (SC) N-acc(-), as in Si-MOSFETs. Our results support that the gas adsorbates work as charged impurities, rather than neutral ones © The Royal Society of Chemistry 2018-
dc.languageENG-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleGas adsorbates are Coulomb scatterers, rather than neutral ones, in a monolayer MoS2 field effect transistor-
dc.typeArticle-
dc.type.rimsA-
dc.identifier.wosid000435358600005-
dc.identifier.scopusid2-s2.0-85048696768-
dc.contributor.affiliatedAuthorHojoon Yi-
dc.contributor.affiliatedAuthorYoung Hee Lee-
dc.identifier.bibliographicCitationNANOSCALE, v.10, no.23, pp.10856 - 10862-
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Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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