Fig. 4: Monolayer single-crystal MoS2 films achieved by the growth and merging of monolayer MoS2 ribbons. | Nature Communications

Fig. 4: Monolayer single-crystal MoS2 films achieved by the growth and merging of monolayer MoS2 ribbons.

From: Epitaxial growth of inch-scale single-crystal transition metal dichalcogenides through the patching of unidirectionally orientated ribbons

Fig. 4: Monolayer single-crystal MoS2 films achieved by the growth and merging of monolayer MoS2 ribbons.The alternative text for this image may have been generated using AI.

a Schematic illustration regarding the growth of monolayer MoS2 single-crystal film through the merging of MoS2 ribbons. Red and yellow spheres represent Mo and S atoms, respectively. b–d SEM images showing the growth process from narrow MoS2 ribbons (b), wide ribbons (c), to continuous 2D film (d) by extending the growth time (t) from ∼2, ∼4, to ∼6 min, respectively. e Representative LEED pattern of monolayer MoS2 single-crystal on the Au(223) facet. The spots indicated by red circles show the moiré satellite peaks for MoS2/Au(223). The spots indicated by yellow circles arise from the Au(111) facet. f More LEED patterns collected over an area of 10 mm × 4 mm. The red lines in the same direction indicate the same orientation of these patterns. g Low-magnification bright-field TEM image of a nearly full-coverage MoS2 film transferred on the TEM grid. h Atomically resolved STEM image of the monolayer MoS2 film, confirming its defect-free feature. i STEM images captured from the left and right edges of a monolayer MoS2 ribbon presenting Mo-zz and S-zz edges, respectively.

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