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

Hareesh, K and Rondiya, SR and Dhole, SD and More, MA and Phase, DM (2022) Development of CoFe2O4 scaffolded reduced graphene oxide/carbon nanotube emitter for field emission application. In: Optical Materials, 134 .

PDF opt_mat_134_2022.pdf - Published Version Restricted to Registered users only Download (7MB) | Request a copy

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.

Item Type:	Journal Article
Publication:	Optical Materials
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Elsevier B.V.
Keywords:	Field emission; Graphene; Iron compounds, Applied field; Carbon material; Carbon nanotube emitters; Emission current stability; Enhanced field emission; Field emission application; Field-emission characteristics; Oxide-carbon nanotube; Reduced graphene oxides; Sharp edges, Carbon nanotubes
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	10 Nov 2022 05:37
Last Modified:	10 Nov 2022 05:37
URI:	https://eprints.iisc.ac.in/id/eprint/77812

Actions (login required)

View Item