Synthesis and characterization of MoS2 nanosheets

Nanotechnology
G DeokarJ-F Colomer

Abstract

Here, we report on the synthesis of MoS2 nanosheets using a simple two-step additive-free growth technique. The as-synthesized nanosheets were characterized to determine their structure and composition, as well as their optical properties. The MoS2 nanosheets were analyzed by scanning electron microscopy, transmission electron microscopy (TEM), including high-resolution scanning TEM imaging and energy-dispersive x-ray spectroscopy, x-ray photoelectron spectroscopy (XPS), Raman spectroscopy and photoluminescence (PL). The as-produced MoS2 nanosheets are vertically aligned with curved edges and are densely populated. The TEM measurements confirmed that the nanosheets have the 2H-MoS2 crystal structure in agreement with the Raman results. The XPS results revealed the presence of high purity MoS2. Moreover, a prominent PL similar to mechanically exfoliated few and mono-layer MoS2 was observed for the as-grown nanosheets. For the thin (≤50 nm) nanosheets, the PL feature was observed at the same energy as that for a direct band-gap monolayer MoS2 (1.83 eV). Thus, the as-produced high-quality, large-area, MoS2 nanosheets could be potentially useful for various optoelectronic and catalysis applications.

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Citations

Jul 1, 2017·Environmental Science & Technology·Zhongying Wang, Baoxia Mi
Jul 7, 2018·Beilstein Journal of Nanotechnology·Geetanjali DeokarMustapha Jouiad
Jan 14, 2020·Advanced Materials·Se-Ho KimBaptiste Gault
Feb 16, 2019·Scientific Reports·Michaela SojkováMartin Hulman
Nov 23, 2019·Nanoscale·Vincent VandalonAgeeth A Bol
Mar 23, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Somayeh Gholami Rudi, Samaneh Soleimani-Amiri
Apr 24, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Shweta TanwarA L Sharma
Nov 26, 2021·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Guokui ZhengQiuju Zhang
Aug 31, 2017··Alexander P. KobzevPeter Hutár

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