Growth, structural and plasma illumination properties of nanocrystalline diamond-decoratedgraphene nanoflakes

KJ Sankaran, TH Chang, SK Bikkarolla,, SS Roy, P Papakonstantinou, S Drijkoningen,, P Pobedinskas, MK Van Bael, NH Tai, IN Lin, K Haenen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The improvement of the plasma illumination (PI) properties of a microplasma device due to the application of nanocrystalline diamond-decorated graphene nanoflakes (NCD-GNFs) as a cathode is investigated. The improved plasma illumination (PI) behavior is closely related to the enhanced field electron emission (FEE) properties of the NCD-GNFs. The NCD-GNFs possess better FEE characteristics with a low turn-on field of 9.36 V/ mm to induce the field emission, a high FEE current density of 2.57 mA/ cm2 and a large field enhancement factor of 2380. The plasma can be triggered at a low voltage of 380 V, attaining a large plasma current density of 3.8 mA /cm2 at an applied voltage of 570 V. In addition, the NCD-GNF cathode shows enhanced lifetime stability of more than 21 min at an applied voltage of 430 V without showing any sign of degradation, whereas the bare GNFs can last only 4 min. The superior FEE and PI properties of the NCD-GNFs are ascribed to the unique combination of diamond and graphene. Transmission electron microscopic studies reveal that the NCD-GNFs contain nano-sized diamond films evenly decorated on the GNFs. Nanographitic phases in the grain boundaries of the diamond grains form electron transport networks that lead to improvement in the FEE characteristics of the NCD-GNFs.
LanguageEnglish
Pages63178-63184
JournalRSC Advances
Volume6
Early online date22 Jun 2016
DOIs
Publication statusPublished - 2016

Fingerprint

diamonds
illumination
graphene
field emission
electron emission
cathodes
current density
microplasmas
plasma currents
electric potential
electron plasma
diamond films
low voltage
electrons
grain boundaries
degradation
life (durability)
augmentation

Keywords

  • graphene nanoflakes
  • nanocrystalline diamond
  • electron field emission

Cite this

Sankaran, KJ ; Chang, TH ; Bikkarolla, SK ; Roy, SS ; Papakonstantinou, P ; Drijkoningen, S ; Pobedinskas, P ; Van Bael, MK ; Tai, NH ; Lin, IN ; Haenen, K. / Growth, structural and plasma illumination properties of nanocrystalline diamond-decoratedgraphene nanoflakes. In: RSC Advances. 2016 ; Vol. 6. pp. 63178-63184.
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abstract = "The improvement of the plasma illumination (PI) properties of a microplasma device due to the application of nanocrystalline diamond-decorated graphene nanoflakes (NCD-GNFs) as a cathode is investigated. The improved plasma illumination (PI) behavior is closely related to the enhanced field electron emission (FEE) properties of the NCD-GNFs. The NCD-GNFs possess better FEE characteristics with a low turn-on field of 9.36 V/ mm to induce the field emission, a high FEE current density of 2.57 mA/ cm2 and a large field enhancement factor of 2380. The plasma can be triggered at a low voltage of 380 V, attaining a large plasma current density of 3.8 mA /cm2 at an applied voltage of 570 V. In addition, the NCD-GNF cathode shows enhanced lifetime stability of more than 21 min at an applied voltage of 430 V without showing any sign of degradation, whereas the bare GNFs can last only 4 min. The superior FEE and PI properties of the NCD-GNFs are ascribed to the unique combination of diamond and graphene. Transmission electron microscopic studies reveal that the NCD-GNFs contain nano-sized diamond films evenly decorated on the GNFs. Nanographitic phases in the grain boundaries of the diamond grains form electron transport networks that lead to improvement in the FEE characteristics of the NCD-GNFs.",
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author = "KJ Sankaran and TH Chang and SK Bikkarolla, and SS Roy and P Papakonstantinou and S Drijkoningen, and P Pobedinskas and {Van Bael}, MK and NH Tai and IN Lin and K Haenen",
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Sankaran, KJ, Chang, TH, Bikkarolla, SK, Roy, SS, Papakonstantinou, P, Drijkoningen, S, Pobedinskas, P, Van Bael, MK, Tai, NH, Lin, IN & Haenen, K 2016, 'Growth, structural and plasma illumination properties of nanocrystalline diamond-decoratedgraphene nanoflakes', RSC Advances, vol. 6, pp. 63178-63184. https://doi.org/10.1039/c6ra07116c

Growth, structural and plasma illumination properties of nanocrystalline diamond-decoratedgraphene nanoflakes. / Sankaran, KJ; Chang, TH; Bikkarolla, SK; Roy, SS; Papakonstantinou, P; Drijkoningen, S; Pobedinskas, P; Van Bael, MK; Tai, NH; Lin, IN; Haenen, K.

In: RSC Advances, Vol. 6, 2016, p. 63178-63184.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Growth, structural and plasma illumination properties of nanocrystalline diamond-decoratedgraphene nanoflakes

AU - Sankaran, KJ

AU - Chang, TH

AU - Bikkarolla,, SK

AU - Roy, SS

AU - Papakonstantinou, P

AU - Drijkoningen,, S

AU - Pobedinskas, P

AU - Van Bael, MK

AU - Tai, NH

AU - Lin, IN

AU - Haenen, K

PY - 2016

Y1 - 2016

N2 - The improvement of the plasma illumination (PI) properties of a microplasma device due to the application of nanocrystalline diamond-decorated graphene nanoflakes (NCD-GNFs) as a cathode is investigated. The improved plasma illumination (PI) behavior is closely related to the enhanced field electron emission (FEE) properties of the NCD-GNFs. The NCD-GNFs possess better FEE characteristics with a low turn-on field of 9.36 V/ mm to induce the field emission, a high FEE current density of 2.57 mA/ cm2 and a large field enhancement factor of 2380. The plasma can be triggered at a low voltage of 380 V, attaining a large plasma current density of 3.8 mA /cm2 at an applied voltage of 570 V. In addition, the NCD-GNF cathode shows enhanced lifetime stability of more than 21 min at an applied voltage of 430 V without showing any sign of degradation, whereas the bare GNFs can last only 4 min. The superior FEE and PI properties of the NCD-GNFs are ascribed to the unique combination of diamond and graphene. Transmission electron microscopic studies reveal that the NCD-GNFs contain nano-sized diamond films evenly decorated on the GNFs. Nanographitic phases in the grain boundaries of the diamond grains form electron transport networks that lead to improvement in the FEE characteristics of the NCD-GNFs.

AB - The improvement of the plasma illumination (PI) properties of a microplasma device due to the application of nanocrystalline diamond-decorated graphene nanoflakes (NCD-GNFs) as a cathode is investigated. The improved plasma illumination (PI) behavior is closely related to the enhanced field electron emission (FEE) properties of the NCD-GNFs. The NCD-GNFs possess better FEE characteristics with a low turn-on field of 9.36 V/ mm to induce the field emission, a high FEE current density of 2.57 mA/ cm2 and a large field enhancement factor of 2380. The plasma can be triggered at a low voltage of 380 V, attaining a large plasma current density of 3.8 mA /cm2 at an applied voltage of 570 V. In addition, the NCD-GNF cathode shows enhanced lifetime stability of more than 21 min at an applied voltage of 430 V without showing any sign of degradation, whereas the bare GNFs can last only 4 min. The superior FEE and PI properties of the NCD-GNFs are ascribed to the unique combination of diamond and graphene. Transmission electron microscopic studies reveal that the NCD-GNFs contain nano-sized diamond films evenly decorated on the GNFs. Nanographitic phases in the grain boundaries of the diamond grains form electron transport networks that lead to improvement in the FEE characteristics of the NCD-GNFs.

KW - graphene nanoflakes

KW - nanocrystalline diamond

KW - electron field emission

U2 - 10.1039/c6ra07116c

DO - 10.1039/c6ra07116c

M3 - Article

VL - 6

SP - 63178

EP - 63184

JO - RSC Advances

T2 - RSC Advances

JF - RSC Advances

SN - 2046-2069

ER -