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Photodetector of multilayer exfoliated MoS2 deposited on polyimide films
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för kemiteknik.ORCID-id: 0000-0001-9312-3672
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.ORCID-id: 0000-0003-2965-0288
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Avdelningen för elektronikkonstruktion.
Vise andre og tillknytning
2018 (engelsk)Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

We fabricated a photodetector based on multilayer molybdenum disulfide (MoS2) by micromechanical cleavage of a molybdenite crystal using a polyimide film. We deposited 40 nm of gold by vacuum sputtering and copper tape was used for the contacts.  Without any surface treatment, we achieved high responsivity at different incident optical power. The calculated responsivity was 23 mA/W of incident optical power in the range between 400 and 800 nm. For the responsivity measurement it was estimated that MoS2 have a bandgap of 1.6 eV, which lies between monolayer and multilayer films. The thickness of the MoS2 thin film was determined by Raman spectroscopy evaluating the difference between the in plane  and out of plane  Raman modes. The measurement of IV curves indicated Ohmic contacts in respect to the Au regardless of the incident optical power. Our device fabrication was much simpler than previous reported devices and can be used to test the light absorption and luminescence capabilities of exfoliated MoS2.

sted, utgiver, år, opplag, sider
2018.
Emneord [en]
Photodetector, MoS2
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-34035OAI: oai:DiVA.org:miun-34035DiVA, id: diva2:1229230
Konferanse
20th International Workshop on Radiation Imaging Detectors, Sundsvall, 24-28 June, 2018
Forskningsfinansiär
Knowledge Foundation, 2600364Tilgjengelig fra: 2018-06-29 Laget: 2018-06-29 Sist oppdatert: 2018-08-16bibliografisk kontrollert

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Forsberg, VivianeAndersson, HenrikEngholm, MagnusThungström, GöranZhang, RenyunHummelgård, MagnusOlin, HåkanNorgren, Magnus

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