A novel WS2 nanowire-nanoflake hybrid material synthesized from WO3 nanowires in sulfur vapor

Funding Agencies|OTKA [K 112531, NN 110676]; Oulu University Graduate School (Infotech programme); Academy of Finland (projects Optifu, HyNa and Suplacat); EU-FP7 (projects Susfoflex and HiPPoCaMP)
In this work, WS2 nanowire-nanoflake hybrids are synthesized by the sulfurization of hydrothermally grown WO3 nanowires. The influence of temperature on the formation of products is optimized to grow WS2 nanowires covered with nanoflakes. Current-voltage and resistance-temperature measurements carried out on random networks of the nanostructures show nonlinear characteristics and negative temperature coefficient of resistance indicating that the hybrids are of semiconducting nature. Bottom gated field effect transistor structures based on random networks of the hybrids show only minor modulation of the channel conductance upon applied gate voltage, which indicates poor electrical transport between the nanowires in the random films. On the other hand, the photo response of channel current holds promise for cost-efficient solution process fabrication of photodetector devices working in the visible spectral range.

Dombovari, AronUniversity of Oulu, Finland (författare)
Sipola, TeemuUniversity of Oulu, Finland (författare)
Puskas, RobertUniversity of Szeged, Hungary (författare)
Kukovecz, AkosUniversity of Szeged, Hungary; MTA SZTE Lendulet Porous Nanocomposites Research Grp, Hungary (författare)
Konya, ZoltanUniversity of Szeged, Hungary; MTA SZTE React Kinet and Surface Chemistry Research Grp, Hungary (författare)
Popov, AlexeyUniversity of Oulu, Finland (författare)
Lin, Jhih-FongUniversity of Oulu, Finland (författare)
Lorite, Gabriela S.University of Oulu, Finland (författare)
Mohl, MelindaUniversity of Oulu, Finland (författare)
Toth, GezaUniversity of Oulu, Finland (författare)
Lloyd Spetz, AnitaLinköpings universitet,Tillämpad sensorvetenskap,Tekniska fakulteten,University of Oulu, Finland(Swepub:liu)anill63 (författare)
Kordas, KrisztianUniversity of Oulu, Finland (författare)
University of Oulu, FinlandUniversity of Szeged, Hungary (creator_code:org_t)

Av författaren/redakt...: Alene Asres, Geo ...; Dombovari, Aron; Sipola, Teemu; Puskas, Robert; Kukovecz, Akos; Konya, Zoltan; visa fler...; Popov, Alexey; Lin, Jhih-Fong; Lorite, Gabriela ...; Mohl, Melinda; Toth, Geza; Lloyd Spetz, Ani ...; Kordas, Krisztia ...; visa färre...

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