Figure 4: Formation of 2D MoS2 flakes during the heating above 800 °C. | Nature Communications

Figure 4: Formation of 2D MoS2 flakes during the heating above 800 °C.

From: Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes

Figure 4

(a–d) Typical TEM image frames showing the size of MoS2 increases with the rising temperatures: (a) 800 °C, (b) 820 °C, (c) 840 °C and (d) 850 °C. The red arrows in d denote 120° angles. Scale bars, 100 nm. (e) Statistical distribution of the size of MoS2 flake as a function of the heating temperature from b–d. Frame areas, 340 × 516 nm2. Each histogram has been fitted with the Gaussian function. (f) Raman spectra of the E-chip, the (NH4)2MoS4 precursor and the as-grown MoS2.

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