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High photoresponse of individual WS2 nanowire-nanoflake hybrid materials
Univ Oulu, Finland.
Univ Oulu, Finland.
Univ Oulu, Finland.
Univ Oulu, Finland.
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2018 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 112, no 23, article id 233103Article in journal (Refereed) Published
Abstract [en]

van der Waals solids have been recognized as highly photosensitive materials that compete conventional Si and compound semiconductor based devices. While 2-dimensional nanosheets of single and multiple layers and 1-dimensional nanowires of molybdenum and tungsten chalcogenides have been studied, their nanostructured derivatives with complex morphologies are not explored yet. Here, we report on the electrical and photosensitive properties of WS2 nanowire-nanoflake hybrid materials we developed lately. We probe individual hybrid nanostructured particles along the structure using focused ion beam deposited Pt contacts. Further, we use conductive atomic force microscopy to analyze electrical behavior across the nanostructure in the transverse direction. The electrical measurements are complemented by in situ laser beam illumination to explore the photoresponse of the nanohybrids in the visible optical spectrum. Photodetectors with responsivity up to similar to 0.4 AW(-1) are demonstrated outperforming graphene as well as most of the other transition metal dichalcogenide based devices. Published by AIP Publishing.

Place, publisher, year, edition, pages
AMER INST PHYSICS , 2018. Vol. 112, no 23, article id 233103
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-149353DOI: 10.1063/1.5030490ISI: 000434840600024OAI: oai:DiVA.org:liu-149353DiVA, id: diva2:1229810
Note

Funding Agencies|Academy of Finland; Academy of Finland (Suplacat); University of Oulu (More than Moore Research Community); University of Oulu Graduate School (Infotech Oulu)

Available from: 2018-07-02 Created: 2018-07-02 Last updated: 2018-07-02

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Lloyd Spetz, Anita
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Sensor and Actuator SystemsFaculty of Science & Engineering
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • asciidoc
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