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DC Field | Value | Language |
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dc.citation.endPage | 4734 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 4726 | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 11 | - |
dc.contributor.author | Pak, Sangyeon | - |
dc.contributor.author | Jang, A-Rang | - |
dc.contributor.author | Lee, Juwon | - |
dc.contributor.author | Hong, John | - |
dc.contributor.author | Giraud, Paul | - |
dc.contributor.author | Lee, Sanghyo | - |
dc.contributor.author | Cho, Yuljae | - |
dc.contributor.author | An, Geon-Hyoung | - |
dc.contributor.author | Lee, Young-Woo | - |
dc.contributor.author | Shin, Hyeon Suk | - |
dc.contributor.author | Morris, Stephen M. | - |
dc.contributor.author | Cha, SeungNam | - |
dc.contributor.author | Sohn, Jung Inn | - |
dc.contributor.author | Kim, Jong Min | - |
dc.date.accessioned | 2023-12-21T19:19:58Z | - |
dc.date.available | 2023-12-21T19:19:58Z | - |
dc.date.created | 2019-04-09 | - |
dc.date.issued | 2019-03 | - |
dc.description.abstract | Monolayered, semiconducting molybdenum disulfide (MoS 2 ) is of considerable interest for its potential applications in next-generation flexible, wearable, and transparent photodetectors because it has outstanding physical properties coupled with unique atomically thin dimensions. However, there is still a lack of understanding in terms of the underlying mechanisms responsible for the photoresponse dynamics, which makes it difficult to identify the appropriate device design strategy for achieving a fast photoresponse time in MoS 2 photodetectors. In this study, we investigate the importance of surface functionalization on controlling the charge carrier densities in a MoS 2 monolayer and in turn the corresponding behavior of the photoresponse in relation to the position of the Fermi-level and the energy band structure. We find that the p-doping and n-doping, which is achieved through the surface functionalization of the MoS 2 monolayer, leads to devices with different photoresponse behavior. Specifically, the MoS 2 devices with surface functional groups contributing to p-doping exhibited a faster response time as well as higher sensitivity compared to that observed for the MoS 2 devices with surface functional groups contributing to n-doping. We attribute this difference to the degree of bending in the energy bands at the metal-semiconductor junction as a result of shifting in the Fermi-level position, which influences the optoelectronic transport properties as well as the recombination dynamics leading to a low dark and thus high detectivity and fast decay time. Based upon these findings, we have also demonstrated the broad applicability of surface functionalization by fabricating a flexible MoS 2 photodetector that shows an outstanding decay time of 0.7 s, which is the fastest response time observed in flexible MoS 2 detectors ever reported. | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.11, no.11, pp.4726 - 4734 | - |
dc.identifier.doi | 10.1039/c8nr07655c | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.scopusid | 2-s2.0-85062878943 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/27048 | - |
dc.identifier.url | https://pubs.rsc.org/en/Content/ArticleLanding/2019/NR/C8NR07655C#!divAbstract | - |
dc.identifier.wosid | 000462669600009 | - |
dc.language | 영어 | - |
dc.publisher | Royal Society of Chemistry | - |
dc.title | Surface functionalization-induced photoresponse characteristics of monolayer MoS 2 for fast flexible photodetectors | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Layered semiconductors | - |
dc.subject.keywordAuthor | Molybdenum compounds | - |
dc.subject.keywordAuthor | Monolayers | - |
dc.subject.keywordAuthor | Organic polymers | - |
dc.subject.keywordAuthor | Photodetectors | - |
dc.subject.keywordAuthor | Photons | - |
dc.subject.keywordAuthor | Semiconductor doping | - |
dc.subject.keywordAuthor | Semiconductor junctions | - |
dc.subject.keywordAuthor | Flexible photodetectors | - |
dc.subject.keywordAuthor | Photoresponse characteristics | - |
dc.subject.keywordAuthor | Recombination dynamics | - |
dc.subject.keywordAuthor | Surface functional groups | - |
dc.subject.keywordAuthor | Surface Functionalization | - |
dc.subject.keywordAuthor | Transparent photodetector | - |
dc.subject.keywordAuthor | Sulfur compounds | - |
dc.subject.keywordAuthor | Metal-semiconductor junctions | - |
dc.subject.keywordAuthor | Molybdenum disulfide | - |
dc.subject.keywordAuthor | Band structure | - |
dc.subject.keywordAuthor | Fermi level | - |
dc.subject.keywordPlus | CHARGE-CARRIER TRANSPORT | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | TRANSISTORS | - |
dc.subject.keywordPlus | GAIN | - |
dc.subject.keywordPlus | ELECTRONICS | - |
dc.subject.keywordPlus | CELLS | - |
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