UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Current-mode deep level transient spectroscopy of a semiconductor nanowire field-effect transistor

Isakov, I; Sourribes, MJL; Warburton, PA; (2017) Current-mode deep level transient spectroscopy of a semiconductor nanowire field-effect transistor. Journal of Applied Physics , 122 (9) , Article 094305. 10.1063/1.5000370. Green open access

[img]
Preview
Text
1%2E5000370.pdf - ["content_typename_Published version" not defined]

Download (1MB) | Preview

Abstract

One of the main limiting factors in the carrier mobility in semiconductor nanowires is the presence of deep trap levels. While deep-level transient spectroscopy (DLTS) has proved to be a powerful tool in analysing traps in bulk semiconductors, this technique is ineffective for the characterisation of nanowires due to their very small capacitance. Here, we introduce a new technique for measuring the spectrum of deep traps in nanowires. In current-mode DLTS (“I-DLTS”), the temperature-dependence of the transient current through a nanowire field-effect transistor in response to an applied gate voltage pulse is measured. We demonstrate the applicability of I-DLTS to determine the activation energy and capture cross-sections of several deep defect states in zinc oxide nanowires. In addition to characterising deep defect states, we show that I-DLTS can be used to measure the surface barrier height in semiconductor nanowires.

Type: Article
Title: Current-mode deep level transient spectroscopy of a semiconductor nanowire field-effect transistor
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.5000370
Publisher version: http://doi.org/10.1063/1.5000370
Language: English
Additional information: Published by AIP Publishing. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics, DOPED SILICON NANOWIRES, MOLECULAR-BEAM EPITAXY, OXIDE NANOWIRES, ZNO, DENSITY
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1573353
Downloads since deposit
42Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item