Metallic Ti3C2TX MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio

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dc.contributor.authorKim, Seon Joonko
dc.contributor.authorKoh, Hyeong-Junko
dc.contributor.authorRen, Chang E.ko
dc.contributor.authorKwon, Ohminko
dc.contributor.authorMaleski, Kathleenko
dc.contributor.authorCho, Soo-Yeonko
dc.contributor.authorAnasori, Babakko
dc.contributor.authorKim, Choong-Kiko
dc.contributor.authorChoi, Yang-Kyuko
dc.contributor.authorKim, Jihanko
dc.contributor.authorGogotsi, Yuryko
dc.contributor.authorJung, Hee-Taeko
dc.date.accessioned2018-04-24T04:26:52Z-
dc.date.available2018-04-24T04:26:52Z-
dc.date.created2018-04-02-
dc.date.created2018-04-02-
dc.date.created2018-04-02-
dc.date.created2018-04-02-
dc.date.issued2018-02-
dc.identifier.citationACS NANO, v.12, no.2, pp.986 - 993-
dc.identifier.issn1936-0851-
dc.identifier.urihttp://hdl.handle.net/10203/241226-
dc.description.abstractAchieving high sensitivity in solid-state gas sensors can allow the precise detection of chemical agents. In particular, detection of volatile organic compounds (VOCs) at the parts per billion (ppb) level is critical for the early diagnosis of diseases. To obtain high sensitivity, two requirements need to be simultaneously satisfied: (i) low electrical noise and (ii) strong signal, which existing sensor materials cannot meet. Here, we demonstrate that 2D metal carbide MXenes, which possess high metallic conductivity for low noise and a fully functionalized surface for a strong signal, greatly outperform the sensitivity of conventional semiconductor channel materials. Ti3C2Tx MXene gas sensors exhibited a very low limit of detection of 50-100 ppb for VOC gases at room temperature. Also, the extremely low noise led to a signal-to-noise ratio 2 orders of magnitude higher than that of other 2D materials, surpassing the best sensors known. Our results provide insight in utilizing highly functionalized metallic sensing channels for developing highly sensitive sensors.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleMetallic Ti3C2TX MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio-
dc.typeArticle-
dc.identifier.wosid000426615600009-
dc.identifier.scopusid2-s2.0-85042658916-
dc.type.rimsART-
dc.citation.volume12-
dc.citation.issue2-
dc.citation.beginningpage986-
dc.citation.endingpage993-
dc.citation.publicationnameACS NANO-
dc.identifier.doi10.1021/acsnano.7b07460-
dc.contributor.localauthorChoi, Yang-Kyu-
dc.contributor.localauthorKim, Jihan-
dc.contributor.localauthorJung, Hee-Tae-
dc.contributor.nonIdAuthorKoh, Hyeong-Jun-
dc.contributor.nonIdAuthorRen, Chang E.-
dc.contributor.nonIdAuthorMaleski, Kathleen-
dc.contributor.nonIdAuthorAnasori, Babak-
dc.contributor.nonIdAuthorGogotsi, Yury-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordAuthortwo-dimensional materials-
dc.subject.keywordAuthorMXene-
dc.subject.keywordAuthortitanium carbide-
dc.subject.keywordAuthorgas sensing-
dc.subject.keywordAuthormetallic channel-
dc.subject.keywordAuthorsignal-to-noise ratio-
dc.subject.keywordAuthorvolatile organic compound-
dc.subject.keywordAuthortwo-dimensional materials-
dc.subject.keywordAuthorMXene-
dc.subject.keywordAuthortitanium carbide-
dc.subject.keywordAuthorgas sensing-
dc.subject.keywordAuthormetallic channel-
dc.subject.keywordAuthorsignal-to-noise ratio-
dc.subject.keywordAuthorvolatile organic compound-
dc.subject.keywordPlusTOTAL-ENERGY CALCULATIONS-
dc.subject.keywordPlusWAVE BASIS-SET-
dc.subject.keywordPlusSENSING PERFORMANCE-
dc.subject.keywordPlusEXHALED BREATH-
dc.subject.keywordPlusCARBIDES MXENES-
dc.subject.keywordPlusNH3 SENSOR-
dc.subject.keywordPlusGRAPHENE-
dc.subject.keywordPlusMOS2-
dc.subject.keywordPlusSENSITIVITY-
dc.subject.keywordPlusMOLECULES-
dc.subject.keywordPlusTOTAL-ENERGY CALCULATIONS-
dc.subject.keywordPlusWAVE BASIS-SET-
dc.subject.keywordPlusSENSING PERFORMANCE-
dc.subject.keywordPlusEXHALED BREATH-
dc.subject.keywordPlusCARBIDES MXENES-
dc.subject.keywordPlusNH3 SENSOR-
dc.subject.keywordPlusGRAPHENE-
dc.subject.keywordPlusMOS2-
dc.subject.keywordPlusSENSITIVITY-
dc.subject.keywordPlusMOLECULES-
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