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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
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    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.

    Original languageEnglish
    Article number653
    JournalNanomaterials
    Volume8
    Issue number9
    DOIs
    Publication statusPublished - 09-2018

    All Science Journal Classification (ASJC) codes

    • General Chemical Engineering
    • General Materials Science

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