Fig. 3 TEM evidence of carbon doping in WS2.

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Fig. 3 TEM evidence of carbon doping in WS2. TEM evidence of carbon doping in WS2. Comparison between simulated and experimental HAADF-STEM images (the case of sulfur vacancies and a CH dopant occupying a sulfur vacancy) is shown. Experimental atomic-resolution HAADF-STEM image of the carbon-doped monolayer WS2 (A) shows an area with both sulfur vacancies (VS; yellow circles) and the CH dopant occupied sulfur monovacancies (CH@VS; blue circles) in the carbon-doped monolayer WS2. (B) and (D) show a sulfur monovacancy and its corresponding intensity line profiles, and (C) and (E) show the CH@VS and its corresponding intensity line profiles. (F and G) Simulated HAADF-STEM image of the carbon-doped monolayer WS2 with (F) VS and (G) a CH@VS in the hexagonal lattice. (H) Intensity line profile of the STEM image simulations with VS and CH@VS in the doped monolayer WS2. Fu Zhang et al. Sci Adv 2019;5:eaav5003 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).