Enhanced surface transfer doping of diamond by V2O5 with improved thermal stability

Crawford, K., Cao, L., Qi, D., Tallaire, A., Limiti, E., Verona, C., Wee, A. T.S. and Moran, D. (2016) Enhanced surface transfer doping of diamond by V2O5 with improved thermal stability. Applied Physics Letters, 108(4), 042103. (doi: 10.1063/1.4940749)

Abstract

Surface transfer doping of hydrogen-terminated diamond has been achieved utilising V2O5 as a surface electron accepting material. Contact between the oxide and diamondsurface promotes the transfer of electrons from the diamond into the V2O5 as revealed by the synchrotron-based high resolution photoemission spectroscopy. Electrical characterization by Hall measurement performed before and after V2O5 deposition shows an increase in hole carrier concentration in the diamond from 3.0 × 1012 to 1.8 × 1013 cm−2 at room temperature. High temperature Hall measurements performed up to 300 °C in atmosphere reveal greatly enhanced thermal stability of the hole channel produced using V2O5 in comparison with an air-induced surface conduction channel. Transfer doping of hydrogen-terminated diamond using high electron affinity oxides such as V2O5 is a promising approach for achieving thermally stable, high performance diamond based devices in comparison with air-induced surface transfer doping

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Crawford, Mr Kevin and Moran, Professor David
• Authors: Crawford, K., Cao, L., Qi, D., Tallaire, A., Limiti, E., Verona, C., Wee, A. T.S., and Moran, D.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: American Institute of Physics
• ISSN: 0003-6951
• ISSN (Online): 1077-3118
• Copyright Holders: Copyright © 2016 American Institute of Physics
• First Published: First published in Applied Physics Letters 108(4):042103
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.