Fig. 6: Multilayer deposition using monolayer-enriched graphene ink utilizing the protocols developed in this study.
From: Layer-by-layer assembly yields thin graphene films with near theoretical conductivity
A Schematic of the setup used to deposit multiple layers of graphene, with film formation aperture shown in cross section. Upon deposition of a layer, films were dried, thermally annealed, and then washed in acetone before adding subsequent layers by repeating the same process. B Extinction histograms of a selected sample of multilayer films from the study. C Average film thickness versus deposition number, showing a linear scaling that indicates that a layer of nanosheets that are on average bilayer are added with each deposition, which is supported by the distribution in Fig. 1B. D Ratio of standard deviation thickness to mean film thickness for each film, showing a reduction in relative roughness with deposition number. E Graph of film conductivity versus film thickness, indicating the networks fabricated by this material and method approach a bulk conductivity of 1.3 × 105 S/m. F Graph of average contact resistance across the films versus deposition number. The solid line in H is related to the solid line in G via \({R}_{c}=8.4\times {10}^{7}/\sigma\).
