Nanoengineered nickel/reduced graphene oxide composites: Control of interfacial nanostructure for tunable electrophysical properties

摘要: Abstract Here we present a novel solvothermal synthesis approach for the accurate control over structural features of nickel/reduced graphene oxide (Ni/rGO) nanocomposites tuneable electrical properties. We discovered that dynamic chemical structure GO during reaction, acts as an active template controlled nanostructured growth nickel nanoparticles (Ni NPs). Therefore, precise reaction time offered possibility to modulate nucleation and coalescence phenomena Ni NPs, allowing in this way precisely adjust their size, density NiO@Ni on final Ni/rGO nanocomposites. The electrophysical properties (work function conductivity) different were determined found be directly dependent NPs radius also NiO buffer layer width. confirmed crucial role thickness at Pt-NiO-Ni-NiO-rGO interface changing conductivity from metallic those specific Schottky contact or p-n heterojunction. These new findings reveal relevant potential using versatile promising material micro-, nano- optoelectronics well energy storage technologies.