Growth of High-Purity and High-Quality Turbostratic Graphene with Different Interlayer Spacings

Turbostratic graphene is a multilayer graphene, which has exotic electrical properties similar to those of monolayer graphene due to the low interlayer interaction. Additionally, the stacking structure of the turbostratic multilayer graphene can decrease the effect of attachment of charge impurities and surface roughness. This paper explores the growth of high-purity and high quality turbostratic graphene with different interlayer spacings by calcining ferric chloride and sucrose at 1000 degrees C for 1 h under an argon atmosphere. X-ray diffraction patterns and Raman results imply that the turbostratic graphene contains two different interlayer spacings: 3.435 and 3.55 angstrom. The 3.55 angstrom turbostratic graphene is on top of the 3.435 angstrom turbostratic graphene, and there is an AB stacking pattern between the topmost graphene layer of 3.435 angstrom turbostratic graphene and the first graphene layer of the 3.55 angstrom turbostratic graphene, with an interlayer spacing of 3.35 angstrom. The two different interlayer spacings of turbostratic graphene arise from different cooling rates between the higher temperature ranges (>700 degrees C) and lower temperatures (<700 degrees C).

Automated summary

In this study, high-purity and high-quality turbostratic graphene with different interlayer spacings were successfully grown by calcining ferric chloride and sucrose at 1000 degrees C for 1 hour under an argon atmosphere. X-ray diffraction patterns and Raman results revealed that the turbostratic graphene consists of two different interlayer spacings: 3.435 and 3.55 angstrom. The two interlayer spacings are formed due to different cooling rates at higher temperature ranges (>700 degrees C) and lower temperatures (<700 degrees C).