Low Temperature Synthesis of Lithium-Doped Nanocrystalline Diamond Films with Enhanced Field Electron Emission Properties

Kamatchi  Jothiramalingam Sankaran; Kalpataru Panda; Ping-Yen Hsieh; Paulius Pobedinskas; Jeong  Young Park; Marlies  K Van Bael; Nyan-Hwa Tai; I-Nan Lin; Ken Haenen

doi:10.3390/nano8090653

Nanomaterials (Aug 2018)

Low Temperature Synthesis of Lithium-Doped Nanocrystalline Diamond Films with Enhanced Field Electron Emission Properties

Kamatchi Jothiramalingam Sankaran,
Kalpataru Panda,
Ping-Yen Hsieh,
Paulius Pobedinskas,
Jeong Young Park,
Marlies K Van Bael,
Nyan-Hwa Tai,
I-Nan Lin,
Ken Haenen

Affiliations

Kamatchi Jothiramalingam Sankaran: Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium
Kalpataru Panda: Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Korea
Ping-Yen Hsieh: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, China
Paulius Pobedinskas: Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium
Jeong Young Park: Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Korea
Marlies K Van Bael: Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium
Nyan-Hwa Tai: Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, China
I-Nan Lin: Department of Physics, Tamkang University, Tamsui 251, Taiwan, China
Ken Haenen: Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium

DOI: https://doi.org/10.3390/nano8090653
Journal volume & issue: Vol. 8, no. 9
p. 653

Abstract

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Low temperature (350 °C) grown conductive nanocrystalline diamond (NCD) films were realized by lithium diffusion from Cr-coated lithium niobate substrates (Cr/LNO). The NCD/Cr/LNO films showed a low resistivity of 0.01 Ω·cm and excellent field electron emission characteristics, viz. a low turn-on field of 2.3 V/µm, a high-current density of 11.0 mA/cm2 (at 4.9 V/m), a large field enhancement factor of 1670, and a life-time stability of 445 min (at 3.0 mA/cm2). The low temperature deposition process combined with the excellent electrical characteristics offers a new prospective for applications based on temperature sensitive materials.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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