Multifunctional Self-Doped Nanocrystal Thin-Film Transistor Sensors
DC Field | Value | Language |
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dc.contributor.author | Choi, Dongsun | - |
dc.contributor.author | Park, Mihyeon | - |
dc.contributor.author | Jeong, Juyeon | - |
dc.contributor.author | Shin, Hang-Beum | - |
dc.contributor.author | Choi, Yun Chang | - |
dc.contributor.author | Jeong, Kwang Seob | - |
dc.date.accessioned | 2021-09-01T18:58:25Z | - |
dc.date.available | 2021-09-01T18:58:25Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-02-20 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/67603 | - |
dc.description.abstract | Self-doping in nanocrystals allows accessing higher quantum states. The electrons occupying the lowest energy state of the conduction band form a metastable state that is very sensitive to the electrostatic potential of the surface. Here, we demonstrate that the high charge sensitivity of the self-doped HgSe colloidal quantum dot solid can be used for sensing three different targets with different phases through self-doped HgSe nanocrystal/ZnO thin-film transistors: the environmental gases (CO2 gas, NO gas, and H2S gas); mid-IR photon; and biothiol (L-cysteine) molecules. The self-doped quantum dot solid detects the targets through different mechanisms. The physisorption of the CO2 gas and the NO gas molecules, and the mid-IR photodetection show reversible processes, whereas the chemisorption of L-cysteine biothiol and H2S gas molecules shows irreversible processes. Considering the quenching of mid-IR intraband photoluminescence of the HgSe colloidal quantum dot solid by the vibrational mode of the CO2 gas molecule, sensing the CO2 gas could be involved in the electronic-to-vibrational energy transfer. The target molecules are quantitatively analyzed, and the limits of detection for CO2 and L-cysteine are 250 ppm and 10 nM, respectively, which are comparable to the performance of commercial detectors. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | QUANTUM DOTS | - |
dc.subject | TRANSITION | - |
dc.title | Multifunctional Self-Doped Nanocrystal Thin-Film Transistor Sensors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jeong, Kwang Seob | - |
dc.identifier.doi | 10.1021/acsami.8b16083 | - |
dc.identifier.scopusid | 2-s2.0-85061957714 | - |
dc.identifier.wosid | 000459642200060 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.11, no.7, pp.7242 - 7249 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 7242 | - |
dc.citation.endPage | 7249 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | QUANTUM DOTS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordAuthor | self-doped nanocrystal | - |
dc.subject.keywordAuthor | gas sensor | - |
dc.subject.keywordAuthor | probe-free biosensor | - |
dc.subject.keywordAuthor | mid-IR photodetector | - |
dc.subject.keywordAuthor | TFT sensor | - |
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