Enhanced field emission from metal-coated carbon nanowalls

Yuta Kaneko, Kosuke Terada, Kungen Teii

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fine-grained metals with sizes as small as 10 nm are deposited on nitrogen-incorporated carbon nanowalls to enhance field emission. The amount of metal coating is varied using the nominal thickness to control morphology and coverage of metal nanoparticles. The emission turn-on field decreases down to around 1.6 V um-1 and 1.8 V um-1 with increasing thickness of Ag and Au to 2 nm and 4 nm, respectively, and increases for further increase in thickness. A lower turn-on field corresponds well to a larger field enhancement factor, confirming that additional field enhancement with the morphological evolution of metal nanoparticles governs emission performance.

Original languageEnglish
Article number118002
JournalJapanese journal of applied physics
Volume58
Issue number11
DOIs
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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