ZnO nanowires with Au contacts characterised in the as-grown real device configuration using a local multi-probe method.
Nanotechnology
; 25(42): 425706, 2014 Oct 24.
Article
en En
| MEDLINE
| ID: mdl-25277958
ABSTRACT
We demonstrate here a method using a multi-probe UHV instrument to isolate and measure individual metal contacts controllably fabricated on the tips of free standing ZnO nanowires (NWs). The measurements show Au can form reliable Ohmic and rectifying contacts by exercising control over the surface properties. In the as-grown state the Au contacts display low-resistance characteristics which are determined by the adsorbed species and defects on the NW surface. Subjecting the NWs to an oxidising agent (H2O2) increases the surface potential barrier creating more rectifying contacts. These developments are crucial for controllable NW array devices.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Nanotechnology
Año:
2014
Tipo del documento:
Article
País de afiliación:
Reino Unido