Nanostructured MoS2 and WS2 Photoresponses under Gas Stimuli

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dc.contributor.authorBasyooni, Mohamed A.
dc.contributor.authorZaki, Shrouk E.
dc.contributor.authorAlfryyan, Nada
dc.contributor.authorTihtih, Mohammed
dc.contributor.authorEker, Yasin Ramazan
dc.contributor.authorAttia, Gamal F.
dc.contributor.authorYilmaz, Mucahit
dc.date.accessioned2024-02-23T14:35:15Z
dc.date.available2024-02-23T14:35:15Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractThis study was on the optoelectronic properties of multilayered two-dimensional MoS2 and WS2 materials on a silicon substrate using sputtering physical vapor deposition (PVD) and chemical vapor deposition (CVD) techniques. For the first time, we report ultraviolet (UV) photoresponses under air, CO2, and O-2 environments at different flow rates. The electrical Hall effect measurement showed the existence of MoS2 (n-type)/Si (p-type) and WS2 (P-type)/Si (p-type) heterojunctions with a higher sheet carrier concentration of 5.50 x 10(5) cm(-2) for WS2 thin film. The IV electrical results revealed that WS2 is more reactive than MoS2 film under different gas stimuli. WS2 film showed high stability under different bias voltages, even at zero bias voltage, due to the noticeably good carrier mobility of 29.8 x 10(2) cm(2)/V. WS2 film indicated a fast rise/decay time of 0.23/0.21 s under air while a faster response of 0.190/0.10 s under a CO2 environment was observed. Additionally, the external quantum efficiency of WS2 revealed a remarkable enhancement in the CO2 environment of 1.62 x 10(8) compared to MoS2 film with 6.74 x 10(6). According to our findings, the presence of CO2 on the surface of WS2 improves such optoelectronic properties as photocurrent gain, photoresponsivity, external quantum efficiency, and detectivity. These results indicate potential applications of WS2 as a photodetector under gas stimuli for future optoelectronic applications.en_US
dc.description.sponsorshipPrincess Nourah bint Abdulrahman University Researchers Supporting Project [PNURS-P2022R291]; Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabiaen_US
dc.description.sponsorshipPrincess Nourah bint Abdulrahman University Researchers Supporting Project (PNURS-P2022R291), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.en_US
dc.identifier.doi10.3390/nano12203585
dc.identifier.issn2079-4991
dc.identifier.issue20en_US
dc.identifier.pmid36296777en_US
dc.identifier.scopus2-s2.0-85140748673en_US
dc.identifier.urihttps://doi.org/10.3390/nano12203585
dc.identifier.urihttps://hdl.handle.net/20.500.12452/15948
dc.identifier.volume12en_US
dc.identifier.wosWOS:000873533200001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherMdpien_US
dc.relation.ispartofNanomaterialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectTwo-Dimensional Materialen_US
dc.subjectMos2en_US
dc.subjectWs2en_US
dc.subjectThin Filmen_US
dc.subjectOptoelectronicsen_US
dc.titleNanostructured MoS2 and WS2 Photoresponses under Gas Stimulien_US
dc.typeArticleen_US

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