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Improved field emission stability with a high current density of decorated CNTs for electron emission devices

Sarvar, Mohd ; Aalam, Shah Masheerul ; Raza, Mohammad Moeen Hasan ; Khan, Mohammad Shahid ; Ali, Javid

Journal of materials science. Materials in electronics, 2023, Vol.34 (3), p.163, Article 163 [Periódico revisado por pares]

New York: Springer US

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Título:
Improved field emission stability with a high current density of decorated CNTs for electron emission devices
Autor: Sarvar, Mohd ; Aalam, Shah Masheerul ; Raza, Mohammad Moeen Hasan ; Khan, Mohammad Shahid ; Ali, Javid
Assuntos: Characterization and Evaluation of Materials ; Chemical vapor deposition ; Chemistry and Materials Science ; Current density ; Electron emission ; Emission analysis ; Emitters ; Field emission spectroscopy ; Fourier transforms ; Infrared analysis ; Infrared spectroscopy ; Iron ; Low pressure ; Materials Science ; Multi wall carbon nanotubes ; Nanoparticles ; Optical and Electronic Materials ; Radio frequency ; Raman spectroscopy ; Silicon substrates ; Spectrum analysis ; Sputtering ; Stability ; Thickness ; Zinc oxide ; Zinc oxides
É parte de: Journal of materials science. Materials in electronics, 2023, Vol.34 (3), p.163, Article 163
Descrição: Low-pressure chemical vapour deposition (LPCVD) has been used to grow multi-walled carbon nanotubes (MWCNTs) on a silicon (Si) substrate. The Si substrate is coated with iron (Fe) nanoparticles at different times of deposition at a power of 100 W (W) by using Radio Frequency (RF) sputtering. In this paper, we have prepared MWCNTs with different thicknesses of Fe nanoparticles. To enhance the field emission properties, we coat the surface of MWCNTs with Zinc oxide (ZnO) nanoparticles for 5 min at 100 W power by using the RF sputtering technique. The growth of MWCNTs and the attaching of ZnO nanoparticles on MWCNTs were substantiated by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. The field emission studies of ZnO x –Fe x @MWCNTs (where x represents 5 min) nanostructures show that the current density increases remarkably. Compared to other field emitters such as MWCNTs and ZnO-attached MWCNTs, the ZnO attached MWCNTs had less iron thickness MWCNTs field emitters are better field emitters with lower turn-on voltage, higher current density, higher field enhancement factor, and better repeatability, and they also show good stability over a period of 15 h.
Editor: New York: Springer US
Idioma: Inglês

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Improved field emission stability with a high current density of decorated CNTs for electron emission devices

Sarvar, Mohd ; Aalam, Shah Masheerul ; Raza, Mohammad Moeen Hasan ; Khan, Mohammad Shahid ; Ali, Javid

New York: Springer US

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