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

Georgies Alene Asres, Aron Dombovari, Teemu Sipola, Robert Puskás, Akos Kukovecz, Zoltán Kónya, Alexey Popov, Jhih Fong Lin, Gabriela S. Lorite, Melinda Mohl, Geza Toth, Anita Lloyd Spetz, Krisztian Kordas

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10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number25610
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 16 May 2016
MoE publication typeA1 Journal article-refereed

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    Asres, G. A., Dombovari, A., Sipola, T., Puskás, R., Kukovecz, A., Kónya, Z., Popov, A., Lin, J. F., Lorite, G. S., Mohl, M., Toth, G., Lloyd Spetz, A., & Kordas, K. (2016). A novel WS2 nanowire-nanoflake hybrid material synthesized from WO3 nanowires in sulfur vapor. Scientific Reports, 6, [25610]. https://doi.org/10.1038/srep25610