Development of CoFe2O4 scaffolded reduced graphene oxide/carbon nanotube emitter for field emission application

Document Type

Article

Publication Title

Optical Materials

Abstract

The field emission (FE) characteristics of CoFe2O4/rGO/CNT (CGC) emitter is reported by comparing it with that of CoFe2O4/rGO (CG), CoFe2O4/CNT (CC), rGO/CNT (GC) and individual emitter. Among them, current density was high for CGC emitter i.e. 3.329 mA cm−2 for applied field of 5.4 V μm−1 as well as a good emission current stability. These superior FE characteristics of CGC emitter is due to the decreased bandgap as well as work function and, due to the sharp edges provided by CNTs and CoFe2O4 nanoparticles which results in easy electron liberation. A detailed mechanism for enhanced FE performance has been proposed based on obtained results.

DOI

10.1016/j.optmat.2022.113158

Publication Date

12-1-2022

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