Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Yu, Seong Hoon | ko |
dc.contributor.author | Girma, Henok Getachew | ko |
dc.contributor.author | Sim, Kyu Min | ko |
dc.contributor.author | Yoon, Seongwon | ko |
dc.contributor.author | Park, Jong Mok | ko |
dc.contributor.author | Kong, Hoyoul | ko |
dc.contributor.author | Chung, Dae Sung | ko |
dc.date.accessioned | 2019-10-29T06:51:21Z | - |
dc.date.available | 2019-10-29T06:51:21Z | - |
dc.date.created | 2019-10-21 | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | Nanoscale, v.11, no.38, pp.17709 - 17717 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/10847 | - |
dc.description.abstract | A strategically designed polymer semiconductor thin film morphology with both high responsivity to the specific gas analyte and high signal transport efficiency is reported to realize high-performance flexible NOx gas sensors. Breath-figure (BF) molding of polymer semiconductors enables a finely defined degree of nano-porosity in polymer films with high reproducibility while maintaining high charge carrier mobility characteristics of organic field effect transistors (OFETs). The optimized BF-OFET with a donor-acceptor copolymer exhibits a maximum responsivity of over 104%, sensitivity of 774% ppm-1, and limit of detection (LOD) of 110 ppb against NO at room temperature. When tested across at NO concentrations of 0.2-10 ppm, the BF-OFET gas sensor exhibits a response time of 100-300 s, which is suitable for safety purposes in practical applications. Furthermore, BF-OFETs show a high reproducibility as confirmed by statistical analysis on 64 independently fabricated devices. The selectivity of NOx analytes is tested by comparing the sensing ability of BF-OFETs with those of other reducing gases and volatile organic compounds; the BF-OFET gas sensor platform monitors specific gas analytes based on their polarity and magnitude of sensitivity. Finally, flexible BF-OFETs conjugated with plastic substrates are demonstrated and they exhibit a sensitivity of 500% ppm-1 and a LOD of 215 ppb, with a responsivity degradation of only 14.2% after 10000 bending cycles at 1% strain. © 2019 The Royal Society of Chemistry. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Polymer-based flexible NOx sensors with ppb-level detection at room temperature using breath-figure molding | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/c9nr06096k | - |
dc.identifier.wosid | 000489646900013 | - |
dc.identifier.scopusid | 2-s2.0-85072944234 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.contributor.nonIdAuthor | Girma, Henok Getachew | - |
dc.contributor.nonIdAuthor | Park, Jong Mok | - |
dc.contributor.nonIdAuthor | Kong, Hoyoul | - |
dc.identifier.citationVolume | 11 | - |
dc.identifier.citationNumber | 38 | - |
dc.identifier.citationStartPage | 17709 | - |
dc.identifier.citationEndPage | 17717 | - |
dc.identifier.citationTitle | Nanoscale | - |
dc.type.journalArticle | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | FIELD-EFFECT TRANSISTOR | - |
dc.subject.keywordPlus | GAS SENSOR | - |
dc.subject.keywordPlus | ORGANIC TRANSISTORS | - |
dc.subject.keywordPlus | AMMONIA | - |
dc.subject.keywordPlus | AIR | - |
dc.contributor.affiliatedAuthor | Chung, Dae Sung | - |
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