Synthesis, microstructure, optical and field emission studies of iron vanadium oxide nanosheets

Abstract

We report a single step growth of thin graphene-like, densely packed FeV3O8 (FVO) nanosheets on silicon substrates via facile hydrothermal synthesis. These nanosheets have dimensions of a few microns with thin edges, offering very high aspect ratio. These FVO nanosheets exhibit excellent field emission behaviour with low turn on and threshold voltages of 1.3 V μm−1 and 1.7 V μm−1, respectively. The corresponding emitter delivers high emission current density of (~1.650 mA cm−2) at fairly low applied field (~4.00 V μm−1).