Field emission from nanocrystalline diamond/carbon nanowall composite films deposited on scratched substrates

C. Y. Cheng, M. Nakashima, K. Teii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We report the deposition and field emission properties of nanostructured composites consisting of carbon nanowalls (CNWs) and nanocrystalline diamond films by introducing two kinds of substrate scratching pretreatment, i.e., undulation and ultrasonic vibration. With increasing duration of scratching pretreatment, the morphology of the deposits changes from simple CNWs to a film/CNW composite and lastly to CNWs on a film, and then the space between the walls is increased. The emission turn-on field is reduced from 2.1 V/μm for simple CNWs to around 1.2 V/μm for the composite films, accompanied by an increase in field enhancement factor. The results indicate that electric field screening between the walls is successfully suppressed by widening of the wall spacing.

Original languageEnglish
Title of host publicationDiamond Electronics and Biotechnology - Fundamentals to Applications V
Pages87-91
Number of pages5
DOIs
Publication statusPublished - 2012
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2011Dec 2 2011

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1395
ISSN (Print)0272-9172

Other

Other2011 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/28/1112/2/11

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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