Grain boundary targeted dewetting for low adhesion graphene transfer printing strategy
발표자
김주현 (부산대학교)
연구책임자
김주현 (부산대학교)
초록
내용
Polycrystalline CVD graphene contains grain boundaries that often become defect sites for polymer residues during conventional PMMA-assisted transfer printing. Such residual polymer particles degrade graphene’s electronic properties, acting as scattering centers that lower carrier mobility and device performance. We present a transfer printing strategy that exploits controlled dewetting to minimize grain boundary contamination. Binary solvents in the PMMA solution induce targeted dewetting on the grain boundaries of graphene, thereby reducing polymer-residue formation at defect sites. The resulting transferred graphene promises improved carrier transport and highly reliable device integration.