On the enhancement of field emission performance of ultrananocrystalline diamond coated nanoemitters

Yu Fen Tzeng*, Yen Chih Lee, Chi Young Lee, I. Nan Lin, Hsin-Tien Chiu

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

Ultrananocrystalline diamond (UNCD) nanoemitters were synthesized by a microwave plasma enhanced chemical vapor deposition process using silicon nanowires (SiNWs) as the template. Preseeding markedly enhances the nucleation of diamond on the SiNW templates, resulting in UNCD grains of smaller size and uniform distribution, which leads to significantly improved electron field emission (EFE) properties. The EFE for UNCD nanoemitters can be turned on at (E0) UNCD-NE =4.4 Vμm, achieving large EFE current density, (Je) UNCD-NE =13.9 mA cm2 at an applied field of 12 Vμm, which is comparable with that of carbon nanotubes, but with much better processing reliability.

Original languageEnglish
Article number063117
JournalApplied Physics Letters
Volume91
Issue number6
DOIs
StatePublished - 17 Aug 2007

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