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Assessment of Surface Damage of Gallium Arsenide due to Reactive Ion Etching

Published online by Cambridge University Press:  21 February 2011

M. S. Puttock
Affiliation:
University of Wales College of Cardiff, Electrical, Electronic and Systems Engineering, UWCC, Cardiff, Wales.
H. Thomas
Affiliation:
University of Wales College of Cardiff, Electrical, Electronic and Systems Engineering, UWCC, Cardiff, Wales.
D. V. Morgan
Affiliation:
University of Wales College of Cardiff, Electrical, Electronic and Systems Engineering, UWCC, Cardiff, Wales.
U. Rossow
Affiliation:
Institute of Solid State Physics, Berlin West Germany.
D. R. T. Zahn
Affiliation:
Institute of Solid State Physics, Berlin West Germany.
W. Richter
Affiliation:
Institute of Solid State Physics, Berlin West Germany.
K. P. Hilton
Affiliation:
Royal Signals and Radar Establishment, Malvern, Worcs, UK.
J. Woodward
Affiliation:
Royal Signals and Radar Establishment, Malvern, Worcs, UK.
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Abstract

Crystal damage of GaAs(100) caused by Reactive Ion Etching (RIE) using a mixture of Cl2 and Ar gas has been assessed using Surface Roughness (Ra), Resonant Raman Spectroscopy (RRS), Schottky diodes, and Spectroscopic Ellipsometry (SE). Plasma conditions for minimum induced damage have been determined and compared to optimised RIE processes using plasma gases SiCl4, CH4-H2, CCl2F2 and Ar. The SiCl4 plasma was found to produce the least crystal damage.

Type
Research Article
Copyright
Copyright © Materials Research Society 1991

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References

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