Aviso: para depositar documentos, por favor, inicia sesión e identifícate con tu cuenta de correo institucional de la UCM con el botón MI CUENTA UCM. No emplees la opción AUTENTICACIÓN CON CONTRASEÑA Disculpen las molestias.
 

Scanning tunnelling spectroscopy characterization of ZnO single crystals

Loading...
Thumbnail Image

Full text at PDC

Publication date

2001

Advisors (or tutors)

Editors

Journal Title

Journal ISSN

Volume Title

Publisher

IOP Publishing Ltd
Citations
Google Scholar

Citation

Abstract

Bulk ZnO single crystals grown by the hydrothermal and flux methods have been characterized by scanning tunnelling spectroscopy performed in the different crystalline faces. Normalized differential conductance has been found to depend on the face considered. Polar O-terminated surfaces show an intrinsic conduction behaviour and surface bandgap in the range 0.4-0.8 eV, which depends on the position probed. The Zn polar surfaces show mainly n-type conduction. The non-polar m regions present either intrinsic or p-type behaviour. The differences observed are attributed to the nature of impurities and defects appearing in the polar and non-polar surfaces during crystal growth.

Research Projects

Organizational Units

Journal Issue

Description

© 2001 IOP Publishing Ltd. This work was supported by MCYT –DGI (ProjectMAT2000-2119). Thanks are due to Professor N Sakagami (Akita National College of Technology, Japan) and Professor S Miyashita (Toyama Medical and Pharmaceutical University, Japan) for their contribution to crystal preparation.

Unesco subjects

Keywords

Collections