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Nanomaterials 2018, 8(9), 653; https://doi.org/10.3390/nano8090653

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

1
Institute for Materials Research (IMO), Hasselt University, 3590 Diepenbeek, Belgium
2
IMOMEC, IMEC vzw, 3590 Diepenbeek, Belgium
3
Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 34141, Korea
4
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, China
5
Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
6
Department of Physics, Tamkang University, Tamsui 251, Taiwan, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 9 August 2018 / Revised: 20 August 2018 / Accepted: 22 August 2018 / Published: 24 August 2018
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Abstract

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. View Full-Text
Keywords: nanocrystalline diamond; lithium; low temperature; field electron emission nanocrystalline diamond; lithium; low temperature; field electron emission
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Sankaran, K.J.; Panda, K.; Hsieh, P.-Y.; Pobedinskas, P.; Park, J.Y.; Van Bael, M.K.; Tai, N.-H.; Lin, I.-N.; Haenen, K. Low Temperature Synthesis of Lithium-Doped Nanocrystalline Diamond Films with Enhanced Field Electron Emission Properties. Nanomaterials 2018, 8, 653.

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