Congratulation Luan!
His paper accepted the Small journal.
Title : Towards wafer-scale monocrystalline graphene growth and observations
Abstract :
Since the discovery in 2004, graphene has boosted numerous fundamental science and technological applications due to the massless Dirac particle-like linear band dispersion that features unprecedented physical properties. Among various methods to synthesize graphene, chemical vapor deposition is the most suitable approach for the scalable production in a wafer-scale which is a critical step for practical applications. Graphene grain boundaries (GGBs), consisting of non-hexagonal carbon rings and therefore modulating properties of graphene film, are inevitably formed via merging of adjacent graphene domains with different orientations. Large-area monocrystalline graphene synthesis without forming GGBs has been challenging, let alone the observation methods of such boundaries. Here, we present an up-todate review of how to grow a wafer-scale monocrystalline graphene without GGBs. One 2 approach is to make a single domain size as large as possible by reducing or passivating the number of nucleation sites. Another approach is to align graphene domains in identical orientation and then lead them to merge together atomically without GGBs. The recently developed methods to observe graphene orientation and GGBs both at atomic-scale and macro-scale are also presented. Finally, perspectives for future research in graphene growth are discussed.