Charge-transfer-based Gas Sensing Using Atomic-layer MoS2

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dc.citation.journalTitleScientific Reportsen_US
dc.citation.volumeNumber5en_US
dc.contributor.authorCho, Byungjinen_US
dc.contributor.authorHahm, Myung Gwanen_US
dc.contributor.authorChoi, Minseoken_US
dc.contributor.authorYoon, Jongwonen_US
dc.contributor.authorKim, Ah Raen_US
dc.contributor.authorLee, Young-Jooen_US
dc.contributor.authorPark, Sung-Gyuen_US
dc.contributor.authorKwon, Jung-Daeen_US
dc.contributor.authorKim, Chang Suen_US
dc.contributor.authorSong, Myungkwanen_US
dc.contributor.authorJeong, Yongsooen_US
dc.contributor.authorNam, Kee-Seoken_US
dc.contributor.authorLee, Sangchulen_US
dc.contributor.authorYoo, Tae Jinen_US
dc.contributor.authorKang, Chang Gooen_US
dc.contributor.authorLee, Byoung Hunen_US
dc.contributor.authorKo, Heung Choen_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorKim, Dong-Hoen_US
dc.date.accessioned2015-03-02T16:58:31Zen_US
dc.date.available2015-03-02T16:58:31Zen_US
dc.date.issued2015en_US
dc.description.abstractTwo-dimensional (2D) molybdenum disulphide (MoS2) atomic layers have a strong potential to be used as 2D electronic sensor components. However, intrinsic synthesis challenges have made this task difficult. In addition, the detection mechanisms for gas molecules are not fully understood. Here, we report a high-performance gas sensor constructed using atomic-layered MoS2ﾠsynthesised by chemical vapour deposition (CVD). A highly sensitive and selective gas sensor based on the CVD-synthesised MoS2was developed.ﾠIn situﾠphotoluminescence characterisation revealed the charge transfer mechanism between the gas molecules and MoS2, which was validated by theoretical calculations. First-principles density functional theory calculations indicated that NO2ﾠand NH3ﾠmolecules have negative adsorption energies (i.e., the adsorption processes are exothermic). Thus, NO2ﾠand NH3ﾠmolecules are likely to adsorb onto the surface of the MoS2. Theﾠin situﾠPL characterisation of the changes in the peaks corresponding to charged trions and neutral excitons via gas adsorption processes was used to elucidate the mechanisms of charge transfer between the MoS2ﾠand the gas molecules.en_US
dc.identifier.citationCho, Byungjin, Hahm, Myung Gwan, Choi, Minseok, et al.. "Charge-transfer-based Gas Sensing Using Atomic-layer MoS2." <i>Scientific Reports,</i> 5, (2015) Nature Publishing Group: http://dx.doi.org/10.1038/srep08052.en_US
dc.identifier.doihttp://dx.doi.org/10.1038/srep08052en_US
dc.identifier.urihttps://hdl.handle.net/1911/79051en_US
dc.language.isoengen_US
dc.publisherNature Publishing Groupen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordtwo-dimensional materialsen_US
dc.subject.keywordmaterials chemistryen_US
dc.titleCharge-transfer-based Gas Sensing Using Atomic-layer MoS2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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