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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/22051

Title: Growth, structural and plasma illumination properties of nanocrystalline diamond-decorated graphene nanoflakes
Authors: Kamatchi Jothiramalingam, Sankaran
Chang, Ting Hsun
Bikkarolla, Santosh Kumar
Roy, Susanta Sinha
Papakonstantinou, Pagona
Drijkoningen, Sien
Pobedinskas, Paulius
Van Bael, Marlies K.
Tai, Nyan-Hwa
Lin, I. -Nan
Haenen, Ken
Issue Date: 2016
Publisher: ROYAL SOC CHEMISTRY
Citation: RSC ADVANCES, 6(68), p. 63178-63184
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 mu m(-1) to induce the field emission, a high FEE current density of 2.57 mA cm(-2) 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 cm(-2) 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.
Notes: [Sankaran, Kamatchi Jothiramalingam; Drijkoningen, Sien; Pobedinskas, Paulius; Van Bael, Marlies K.; Haenen, Ken] Hasselt Univ, Inst Mat Res IMO, Diepenbeek, Belgium. [Sankaran, Kamatchi Jothiramalingam; Drijkoningen, Sien; Pobedinskas, Paulius; Van Bael, Marlies K.; Haenen, Ken] IMOMEC, IMEC Vzw, Diepenbeek, Belgium. [Chang, Ting Hsun; Tai, Nyan-Hwa] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan. [Bikkarolla, Santosh Kumar; Papakonstantinou, Pagona] Univ Ulster, Engn Res Inst, Sch Engn, Newtownabbey, Ulster, North Ireland. [Roy, Susanta Sinha] Shiv Nadar Univ, Dept Phys, Greater Noida, Uttar Pradesh, India. [Lin, I. -Nan] Tamkang Univ, Dept Phys, Tamsui, Taiwan.
URI: http://hdl.handle.net/1942/22051
DOI: 10.1039/c6ra07116c
ISI #: 000379493900009
ISSN: 2046-2069
Category: A1
Type: Journal Contribution
Validation: ecoom, 2017
Appears in Collections: Research publications

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