One step synthesis of SnO2-RGO nanocomposite by thermal evaporation and its field emission study

摘要

SnO2-RGO nanocomposite has been synthesized by thermal evaporation method in a single step and its field emission (FE) properties are investigated. at the base pressure 1×10−8 mbar is reported. Prior to the FE studies, the synthesized SnO2-RGO nanocomposite is characterized using XRD, SEM and TEM to reveal its structural properties. The SnO2-RGO nanocomposite emitter is found to deliver a current density ∼100 µA/cm2 at an applied electric field of ∼ 9.2 V/µm. Moreover, the nanocomposite shows fairly good emission stability without significant degradation of emission current. The FE results seem to be encouraging, indicative of potential candidature of the SnO2-RGO nanocomposite emitter as an electron source for practical applications in vacuum nanoelectronic devices, upon further optimization of morphology.