High-Throughput, Ultrafast Synthesis of Solution Dispersed High-Quality Graphene Via a Novel Hydride Chemistry: Raman Spectra and Electrical Gating

In this talk, we will present a study of a novel process for synthesis of organic-phase stabilized graphene by instantaneous reduction of graphene-oxide (GO) in hydrides at high-throughput. Synthesis of such solution-dispersed graphene is important for large-scale production of graphene and for its applications in building graphene-films, FETs, etc. The current dispersion-production-processes employ toxic chemicals, are low in yield or take several days to complete. The route presented in this talk is ultrafast (few seconds), uses commonly available, low-toxicity chemicals, has a high yield of ~ 68 % and shows a significant reduction in the sp3 bonds as confirmed by Raman spectra. We will also demonstrate that thus-produced single graphene sheets exhibit high carrier mobilities of 50-200 cm2/V/s. The high-throughput processing time-scale, high stability of graphene dispersion, benignity of the reagents and low-cost will enable expedited research and incorporation of graphene into next-generation graphene technologies & applications.