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

K. Hareesh; Sachin R. Rondiya; S. D. Dhole; M. A. More; D. M. Phase

doi:10.1016/j.optmat.2022.113158

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

K. Hareesh, Sachin R. Rondiya, S. D. Dhole, M. A. More, D. M. Phase

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	113158
Journal	Optical Materials
Volume	134
DOIs	https://doi.org/10.1016/j.optmat.2022.113158
Publication status	Published - 12-2022

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2022.113158

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@article{84f519e0fae94e2d94aba91d30b600a6,

title = "Development of CoFe2O4 scaffolded reduced graphene oxide/carbon nanotube emitter for field emission application",

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.",

author = "K. Hareesh and Rondiya, {Sachin R.} and Dhole, {S. D.} and More, {M. A.} and Phase, {D. M.}",

note = "Funding Information: SRR acknowledges the support of the Department of Materials Engineering, Indian Institute of Science (IISc) , Bengaluru, India. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = dec,

doi = "10.1016/j.optmat.2022.113158",

language = "English",

volume = "134",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier",

}

TY - JOUR

T1 - Development of CoFe2O4 scaffolded reduced graphene oxide/carbon nanotube emitter for field emission application

AU - Hareesh, K.

AU - Rondiya, Sachin R.

AU - Dhole, S. D.

AU - More, M. A.

AU - Phase, D. M.

PY - 2022/12

Y1 - 2022/12

N2 - 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.

AB - 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.

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DO - 10.1016/j.optmat.2022.113158

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JO - Optical Materials

JF - Optical Materials

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

Abstract

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