Morphological control of ion-induced carbon nanofibers and their field emission properties

Mohd Zamri Bin Mohd Yusop; Pradip Ghosh; Zhipeng Wang; Masaki Tanemura; Yasuhiko Hayashi; Tetsuo Soga

doi:10.1587/transele.E92.C.1449

Morphological control of ion-induced carbon nanofibers and their field emission properties

Mohd Zamri Bin Mohd Yusop, Pradip Ghosh, Zhipeng Wang, Masaki Tanemura, Yasuhiko Hayashi, Tetsuo Soga

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

Abstract

Carbon nanofibers (CNFs) were fabricated on graphite plates using "Ar⁺ ion sputtering method" in large amount at room temperature. The morphology of CNFs was controlled by a simultaneous carbon supply during ion sputtering. CNF-tipped cones were formed on graphite plate surfaces without carbon supply whereas those with a simultaneous carbon supply featured mainly needle-like protrusions of large size. The field electron emission (FE) properties, measured using parallel plate configurations in 10^-4 Pa range, showed the threshold fields of 4.4 and 5.2 V/μm with a current density of 1 μA/cm² for CNF-tipped cones and needle-like protrusion, respectively. Reliability test results indicated that CNF-tipped cones were more stable than needle-like protrusion. The morphological change after reliability test showed a so-called "self-regenerative" process and structure damage for CNF-tipped cones and needle-like protrusions, respectively.

Original language	English
Pages (from-to)	1449-1453
Number of pages	5
Journal	IEICE Transactions on Electronics
Volume	E92-C
Issue number	12
DOIs	https://doi.org/10.1587/transele.E92.C.1449
Publication status	Published - 2009
Externally published	Yes

Keywords

Carbon nanofiber
Field electron emission
Ion sputtering
Morphological control

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1587/transele.E92.C.1449

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title = "Morphological control of ion-induced carbon nanofibers and their field emission properties",

abstract = "Carbon nanofibers (CNFs) were fabricated on graphite plates using {"}Ar+ ion sputtering method{"} in large amount at room temperature. The morphology of CNFs was controlled by a simultaneous carbon supply during ion sputtering. CNF-tipped cones were formed on graphite plate surfaces without carbon supply whereas those with a simultaneous carbon supply featured mainly needle-like protrusions of large size. The field electron emission (FE) properties, measured using parallel plate configurations in 10-4 Pa range, showed the threshold fields of 4.4 and 5.2 V/μm with a current density of 1 μA/cm2 for CNF-tipped cones and needle-like protrusion, respectively. Reliability test results indicated that CNF-tipped cones were more stable than needle-like protrusion. The morphological change after reliability test showed a so-called {"}self-regenerative{"} process and structure damage for CNF-tipped cones and needle-like protrusions, respectively.",

keywords = "Carbon nanofiber, Field electron emission, Ion sputtering, Morphological control",

author = "Yusop, {Mohd Zamri Bin Mohd} and Pradip Ghosh and Zhipeng Wang and Masaki Tanemura and Yasuhiko Hayashi and Tetsuo Soga",

year = "2009",

doi = "10.1587/transele.E92.C.1449",

language = "English",

volume = "E92-C",

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T1 - Morphological control of ion-induced carbon nanofibers and their field emission properties

AU - Yusop, Mohd Zamri Bin Mohd

AU - Ghosh, Pradip

AU - Wang, Zhipeng

AU - Tanemura, Masaki

AU - Hayashi, Yasuhiko

AU - Soga, Tetsuo

PY - 2009

Y1 - 2009

N2 - Carbon nanofibers (CNFs) were fabricated on graphite plates using "Ar+ ion sputtering method" in large amount at room temperature. The morphology of CNFs was controlled by a simultaneous carbon supply during ion sputtering. CNF-tipped cones were formed on graphite plate surfaces without carbon supply whereas those with a simultaneous carbon supply featured mainly needle-like protrusions of large size. The field electron emission (FE) properties, measured using parallel plate configurations in 10-4 Pa range, showed the threshold fields of 4.4 and 5.2 V/μm with a current density of 1 μA/cm2 for CNF-tipped cones and needle-like protrusion, respectively. Reliability test results indicated that CNF-tipped cones were more stable than needle-like protrusion. The morphological change after reliability test showed a so-called "self-regenerative" process and structure damage for CNF-tipped cones and needle-like protrusions, respectively.

AB - Carbon nanofibers (CNFs) were fabricated on graphite plates using "Ar+ ion sputtering method" in large amount at room temperature. The morphology of CNFs was controlled by a simultaneous carbon supply during ion sputtering. CNF-tipped cones were formed on graphite plate surfaces without carbon supply whereas those with a simultaneous carbon supply featured mainly needle-like protrusions of large size. The field electron emission (FE) properties, measured using parallel plate configurations in 10-4 Pa range, showed the threshold fields of 4.4 and 5.2 V/μm with a current density of 1 μA/cm2 for CNF-tipped cones and needle-like protrusion, respectively. Reliability test results indicated that CNF-tipped cones were more stable than needle-like protrusion. The morphological change after reliability test showed a so-called "self-regenerative" process and structure damage for CNF-tipped cones and needle-like protrusions, respectively.

KW - Carbon nanofiber

KW - Field electron emission

KW - Ion sputtering

KW - Morphological control

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JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

IS - 12

ER -

Morphological control of ion-induced carbon nanofibers and their field emission properties

Abstract

Keywords

ASJC Scopus subject areas

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