Few-layer
MoS2 films stay at the forefront of current
research of two-dimensional materials. At present, continuous MoS2 films are prepared by chemical vapor deposition (CVD) techniques.
Herein, we present a cost-effective fabrication of the large-area
spatially uniform films of few-layer MoS2 flakes using
a modified Langmuir–Schaefer technique. The compression of
the liquid-phase exfoliated MoS2 flakes on the water subphase
was used to form a continuous layer, which was subsequently transferred
onto a submerged substrate by removing the subphase. After vacuum
annealing, the electrical sheet resistance dropped to a level of 10
kΩ/sq, being highly competitive with that of CVD-deposited MoS2 nanosheet films. In addition, a consistent fabrication protocol
of the large-area conductive MoS2 films was established.
The morphology and electrical properties predetermine these films
to advanced detecting, sensing, and catalytic applications. A large
number of experimental techniques were used to characterize the exfoliated
few-layer MoS2 flakes and to elucidate the formation of
the few-layer MoS2 Langmuir film.
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Preparation and study of a MoS2 nanosheet based nanoplatform for a cancer detection and treatment system equipped with an antibody–antigen based recognition element.
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