The role of surface morphology on nucleation density limitation during the CVD growth of graphene and the factors influencing graphene wrinkle formation

Abstract

CVD graphene growth typically uses commercially available cold-rolled copper foils, which includes a rich topography with scratches, dents, pits, and peaks. The graphene grown on this topography, even after annealing the foil, tends to include and reflect these topographic features. Further, the transfer of such CVD graphene to a flat substrate using a polymer transfer method also introduces wrinkles. Here, we examine an electropolishing technique for reducing native foil defects, characterize the resulting foil surface, grow single-crystal graphene on the polished foil, and examine the quality of the graphene for such defects.

Quasistatic Equilibrium Chemical Vapor Deposition of Graphene

“…This confined setup led to mono‐crystalline graphene on polished Cu surface. [ 47 ] Accordingly, Yang et al. characterized the influence of growth pressure on the dynamic balance of evaporation and deposition of copper in copper pockets to deposit single‐crystal graphene using the copper pockets method.…”

Study of graphene p-n junctions formed by the electrostatic modification of the SiO2 substrate

“…Chemical vapor deposition (CVD) graphene 22 , 23 films were fabricated into millimeter-scale Hall effect devices using wet transfer techniques and photolithography, and four-terminal DC electrical measurements were carried out in vacuum. Color contrast of graphene on 300 nm thick SiO 2 on p-Si confirmed monolayers, which was consistent with height profile ( 1 nm) observed in atomic force microscope (AFM) measurements, see Fig.…”

Three-level Spaser System: a Semi-Classical Analysis

“…The gain medium is usually dye molecules, with the gap close to the SP frequency. Apart form dyes, materials [42][43][44] with non-linear effects that exhibit topological resonance, have also been studied as a suitable gain. Additionally, the system may also be placed in an appropriate dielectric environment, which can be used to adjust the SP frequency of a nanosphere.…”