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Investigation of silicon oxynitride and amorphous silicon multilayers

Published online by Cambridge University Press:  15 July 2004

M. Serenyi  and
C. Frigeri
M. Serenyi
Affiliation:
MTA, Research Institute for Technical Physics and Materials Science, 1121 Budapest, Konkoly-Thege út, 29–33, Hungary
C. Frigeri*
Affiliation:
CNR-IMEM Institute, Parco Area delle Scienze 37/A, Fontanini, 43010 Parma, Italy
*
[email protected]
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Abstract

Optical (refractive index) and structural properties of silicon oxynitride (SiON) and amorphous silicon (a-Si) multilayers grown by RF sputtering with thickness in the 10–30 nm range have been analysed by ellipsometry and TEM. Satisfactory agreement between the two techniques is obtained as regards the thickness determination of the SiON films. Disagreement with values obtained by the stylus method by extrapolation for the two types of layers is discussed. The interfaces of the SiON films are very good when n-type P doped Si is used as a target. They are wavy with average periodicity and amplitude on the order of 50 and 2 nm, respectively, when a semi-insulating Si target is used, despite the presence of a buffer layer. Hypothesis is made that P incorporation may improve the reconstruction of the SiON surface.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 27 , Issue 1-3: Tenth International Conference on Defects: Recognition, Imaging and Physics in Semiconductors (DRIP X) , July 2004 , pp. 329 - 332
Copyright
© EDP Sciences, 2004

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