Enhancement of Field Emission Properties of Carbon Nanotubes by ECR-Plasma Treatment | Zendy

Javid Ali | Zendy; Avshish Kumar | Zendy; Samina Husain | Zendy; Shama Parveen | Zendy; Renu Choithrani | Zendy; M. Zulfequar | Zendy; Harsh Harsh | Zendy; Mushahid Husain | Zendy

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Enhancement of Field Emission Properties of Carbon Nanotubes by ECR-Plasma Treatment

Author(s) -

Javid Ali,

Avshish Kumar,

Samina Husain,

Shama Parveen,

Renu Choithrani,

M. Zulfequar,

Harsh Harsh,

Mushahid Husain

Publication year - 2014

Publication title -

journal of nanoscience

Language(s) - English

Resource type - Journals

eISSN - 2356-749X

pISSN - 2314-6931

DOI - 10.1155/2014/437895

Subject(s) - materials science , plasma , analytical chemistry (journal) , chemistry , physics , chromatography , quantum mechanics

We report a significant improvement in electron field emission property of carbon nanotubes film by using an electron cyclotron resonance plasma treatment. Our research results reveal that plasma treatment can modify the surface morphology and enhance the field emission characteristics of carbon nanotubes. Raman spectra indicate that plasma treated CNTs sample has lesser defects. Before plasma treatment, low current density of 6.5 mA/cm2 at 3.0 V/μm and at a high turn-on field Eto of 2.4 V/μm was observed. ECR plasma treated CNTs showed a high current density of 20.0 mA/cm2 at 3.0 V/μm and at a low Eto of 1.6 V/μm. The calculated enhancement factors are 694 and 8721 for ECR-plasma untreated and treated carbon nanotubes, respectively. We found an increase in the enhancement factor and emission current after the ECR-plasma treatment. This may be attributed to creation of geometrical features through the removal of amorphous carbon and catalyst particles

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