University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Ion-beam-synthesized Ag-SiO2 nanocomposite layers for electron field emission devices

Tsang, WM, Stolojan, V, Adikaari, AADT, Wong, SP and Silva, SRP (2005) Ion-beam-synthesized Ag-SiO2 nanocomposite layers for electron field emission devices

Full text not available from this repository.

Abstract

Ag-SiO2 nanocomposite layers were synthesised by Ag+ implantation into thermally oxidised SiO2 layers and demonstrated to have excellent field emission (FE) properties. These nanocomposite layers can give an emission current of 1 nA at electric fields less than 20 V/μm, compared to several thousand volts per micrometre of pure metal surfaces. Their fabrication processes are fully compatible with existing integrated circuit technology. By correlating the FE results with other characterisation techniques including atomic force microscopy, Rutherford backscattering spectroscopy and transmission electron microscopy, it is clearly demonstrated that there are two types of field enhancement mechanisms responsible for the excellent FE properties of these cathodes. Firstly, the electrically conductive Ag nano-clusters embedded in the insulating SiO2 matrix give rise to a local electric field enhancement due to an electrical inhomogeneity effect and secondly, the dense surface protrusions provide a geometric local electric field enhancement. The FE properties of these layers are critically dependent on the size and distribution of the Ag clusters, which can be controlled by the Ag dose and modified by the post-implantation pulse annealing with a high power KrF Excimer laser operating at 248 nm. © 2006 Materials Research Society.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
NameEmailORCID
Tsang, WMUNSPECIFIEDUNSPECIFIED
Stolojan, VUNSPECIFIEDUNSPECIFIED
Adikaari, AADTUNSPECIFIEDUNSPECIFIED
Wong, SPUNSPECIFIEDUNSPECIFIED
Silva, SRPs.silva@surrey.ac.ukUNSPECIFIED
Date : 1 December 2005
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 11:28
Last Modified : 17 May 2017 14:56
URI: http://epubs.surrey.ac.uk/id/eprint/831493

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800