High-field emission performance of a NiFe2O4/rGO/CNT tertiary nanocomposite

K. Hareesh; Sachin R. Suryawanshi; B. Shateesh; Deodatta M. Phase; Shailendra S. Dahiwale; Vasanth N. Bhoraskar; Santhosh K. Haram; Mahendra A. More; Sanjay D. Dhole

doi:10.1039/C6RA02198K

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High-field emission performance of a NiFe₂O₄/rGO/CNT tertiary nanocomposite†

K. Hareesh,^a Sachin R. Suryawanshi,^a B. Shateesh,^b Deodatta M. Phase,^c Shailendra S. Dahiwale,^a Vasanth N. Bhoraskar,^a Santhosh K. Haram,^b Mahendra A. More*^a and Sanjay D. Dhole*^a

Author affiliations

* Corresponding authors

^a Department of Physics, Savitribai Phule Pune University, Pune-411007, India
E-mail: sanjay@physics.unipune.ac.in

^b Department of Chemistry, Savitribai Phule Pune University, Pune-411007, India
E-mail: mam@physics.unipune.ac.in

^c UGC-DAE Consortium, Indore-452017, India

Abstract

Herein, we report the field emission properties of NiFe₂O₄/reduced graphene oxide/carbon nanotubes (NGC) and compared them with the field emission properties of NiFe₂O₄/carbon nanotubes (NC) and NiFe₂O₄/reduced graphene oxide (NG). The NGC nanocomposite showed a very low turn-on field of ∼0.4 V μm⁻¹ and a high emission current density of ∼8.228 mA cm⁻² at a low applied electric field of 1.6 V μm⁻¹. In addition, it exhibited extremely good emission current stability at a preset value of ∼20 μA. The observed very low turn on field of the NGC nanocomposite is due to its lower value of effective work function (1.92 eV), and the results suggest the potential of the synthesized emitter for practical applications in vacuum micro-electronics/nano-electronics.

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Article information

DOI: https://doi.org/10.1039/C6RA02198K
Article type: Paper
Submitted: 25 Jan 2016
Accepted: 01 Mar 2016
First published: 02 Mar 2016

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RSC Adv., 2016,6, 26745-26751

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High-field emission performance of a NiFe₂O₄/rGO/CNT tertiary nanocomposite

K. Hareesh, S. R. Suryawanshi, B. Shateesh, D. M. Phase, S. S. Dahiwale, V. N. Bhoraskar, S. K. Haram, M. A. More and S. D. Dhole, RSC Adv., 2016, 6, 26745 DOI: 10.1039/C6RA02198K

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