Enhanced field emission of plasma treated multilayer graphene

摘要

Electron emission properties of multilayer graphene (MLG) prepared by a facile exfoliation technique have been studied. Effect of CO_2 Ar, N_2, plasma treatment was studied using Raman spectroscopy and investigated for field emission based application. The CO_2 plasma treated multilayer graphene shows an enhanced field emission behavior with a low turn on field of 0.18 V/ μm and high emission current density of 1.89 mA/cm~2 at an applied field of 0.35 V/μm. Further the plasma treated MLG exhibits excellent current stability at a lower and higher emission current value.