Skip to main content

Open Access Nanostair Formation and Field Emission Enhancement on High Dose N-Ion-Implanted Ultrananocrystalline Diamond Pyramid Tips

Download Article:
 Download
(PDF 2989.544921875 kb)
 

Abstract:

We herein report high dose nitrogen (N) ion implantation induced nanostructural modifications and enhanced electron field emission (EFE) properties of ultrananocrystalline diamond (UNCD) pyramid tips. Transmission electron microscopy investigations indicate nanostair type surface formation on the pyramid tips. Evidence of complex nanostructural changes due to ion implantation are found, such as, graphitic or amorphous type transition, volume expansion (about 0.56 μm³), and nanostair type surface formation. The nanostructural modifications possibly enhanced the grain boundary incorporation of N and the electron transport through a transfer doping mechanism, which in turn improved the EFE properties of the ion-implanted pyramid tips. In particular upon N ion implantation the turn-on field is found to reduce from 3.6 V/μm (for unimplanted tips) to 2.8 V/μm and the current density is increased from 0.1 mA/cm² (unimplanted tips) to 5.4 mA/cm² at an applied field of 12.5 V/μm.

Keywords: ELECTRON FIELD EMISSION; ION IMPLANTATION; NANOSTRUCTURAL MODIFICATIONS; ULTRANANOCRYSTALLINE DIAMOND

Document Type: Research Article

DOI: https://doi.org/10.1166/mex.2011.1009

Publication date: 2011-03-01

More about this publication?
  • Materials Express is a peer-reviewed multidisciplinary journal reporting emerging researches on materials science, engineering, technology and biology. Cutting-edge researches on the synthesis, characterization, properties, and applications of a very wide range of materials are covered for broad readership; from physical sciences to life sciences. In particular, the journal aims to report advanced materials with interesting electronic, magnetic, optical, mechanical and catalytic properties for industrial applications.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more