Figure 2 | Scientific Reports

Figure 2

From: Non-classical nucleation in vapor–liquid–solid growth of monolayer WS2 revealed by in-situ monitoring chemical vapor deposition

Figure 2

In-situ monitoring CVD. (a, b) Typical (a) original and (b) analyzed images of WS2 growth obtained by in-situ monitoring CVD at different growth time (i: 136 s, ii: 140 s, iii: 144 s, iv: 148 s, v: 152 s). (c) Plot of monolayer area as a function of growth time. Two dashed lines show the different growth speed during the 1st–2nd nucleation and rapid growth period. (d, e) Calculated curves of (d) volume energy gain, interfacial energy loss, and (e) \(\Delta G\) as a function of \(L\). (f) Time profile of analysed images between (i) 138 s and (vii) 144 s. (g) Schematic illustration of two-step nucleation of WS2 (i: precursor supply, ii: 1st nucleation of intermediate cluster, iii: 2nd nucleation of WS2 within intermediate cluster, iv: WS2 growth within intermediate cluster, v: WS2 growth during rapid growth).

Back to article page