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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/24200
Title: Carbon Nanotube-Based 2-Dimensional and 3-Dimensional Field Emitter Structures
Authors: Kaur G.
Dasgupta A.
Korlam S.
Modi G.
Pulagara N.V.
Lahiri, Indranil
Published in: Journal of Electronic Materials
Abstract: Abstract: Attractive attributes of carbon nanotubes (CNTs), which include high aspect ratio, excellent electrical and thermal conductivity, high melting point, and longer lifetime, have made this one-dimensional material a promising candidate for next-generation field emitters. In the present work, CNTs were grown directly on copper foil, copper foam, nickel foil and nickel foam through chemical vapor deposition. A comparison between CNT-based two-dimensional emitters, i.e. CNTs synthesized on copper and nickel foils, CNT-based three-dimensional (3D) emitters, i.e. CNTs developed on foams of copper and nickel, have been demonstrated. We observed that CNTs on foams exhibited better field emission compared to CNTs synthesized on foils. This is due to the multistage structure of the 3D foams which provides high surface area for CNT growth and hence enhanced field emission response. In the present work, a CNT sample prepared on nickel foam was observed to exhibit better field emission response compared to the other samples synthesized in the present study. This particular sample demonstrateda very low turn-on field of 0.93 V/µm, excellent field enhancement factor of 13,343 and good stability of electron emission. Graphic Abstract: [Figure not available: see fulltext.] © 2020, The Minerals, Metals & Materials Society.
Citation: Journal of Electronic Materials, 50(2): 483-490
URI: https://doi.org/10.1007/s11664-020-08582-0
http://repository.iitr.ac.in/handle/123456789/24200
Issue Date: 2021
Publisher: Springer
Keywords: carbon nanotubes
field emission
Foam
foil
ISSN: 3615235
Author Scopus IDs: 57222284607
57219894405
57219895091
56717385300
57208692398
7004250718
Author Affiliations: Kaur, G., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Dasgupta, A., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Korlam, S., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Modi, G., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Pulagara, N.V., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Lahiri, I., Nanomaterials and Applications Lab, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India, Centre of Excellence: Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: This study was funded by the Naval Research Board (NRB), India (Grant No. NRB-369/MAT/15-16). Naval Research Board, एनआरबी: NRB-369/MAT/15-16
Corresponding Author: Lahiri, I.; Nanomaterials and Applications Lab, India; email: indranil.lahiri@mt.iitr.ac.in
Appears in Collections:Journal Publications [MT]

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