Type

Journal Article

Authors

R. M. Wallace
E. M. Vogel
Greg Hughes
F. S. Aguirre-Tostado
A. M. Sonnet
Barry Brennan
M. Milojevic
C. L. Hinkle

Subjects

Physics

Topics
passivation oxidation gallium arsenide wide band gap semiconductors iii v semiconductors semiconductors indium compounds x ray photoelectron spectra fermi level capacitors

Detection of Ga suboxides and their impact on III-V passivation and fermi-level pinning (2009)

Abstract The passivation of interface states remains an important problem for III-V based semiconductor devices. The role of the most stable bound native oxides GaOx (0.5 ≤ x ≤ 1.5) is of particular interest. Using monochromatic x-ray photoelectron spectroscopy in conjunction with controlled GaAs(100) and InGaAs(100) surfaces, a stable suboxide (Ga2O) bond is detected at the interface but does not appear to be detrimental to device characteristics. In contrast, the removal of the Ga 3+ oxidation state (Ga2O3) is shown to result in the reduction of frequency dispersion in capacitors and greatly improved performance in III-V based devices.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health
Ireland -> Dublin City University -> Subject = Physical Sciences
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Physical Sciences
Ireland -> Dublin City University -> Subject = Physical Sciences: Semiconductors

Full list of authors on original publication

R. M. Wallace, E. M. Vogel, Greg Hughes, F. S. Aguirre-Tostado, A. M. Sonnet, Barry Brennan, M. Milojevic, C. L. Hinkle

Experts in our system

1
Robert M. Wallace
University College Cork
Total Publications: 18
 
2
E. M. Vogel
University College Cork
Total Publications: 9
 
3
Greg Hughes
Dublin City University
Total Publications: 29
 
4
B. Brennan
University College Cork
Total Publications: 9
 
5
Christopher L. Hinkle
University College Cork
Total Publications: 13