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Thermomechanical Behavior and Properties of Passivated Pvd and Ecd Cu Thin Films

Published online by Cambridge University Press:  01 February 2011

M. Gregoire ,
S. Kordic ,
P. Gergaud ,
O. Thomas  and
M. Ignat
M. Gregoire
Affiliation:
STMicroelectronics, Crolles2 Alliance, 850 rue Jean Monnet, 38926 Crolles, France
S. Kordic
Affiliation:
Philips Semiconductors, Crolles2 Alliance, 860 rue Jean Monnet, 38920 Crolles, France
P. Gergaud
Affiliation:
TECSEN, CNRS, Université of Aix-Marseille III, Faculté St Jérôme, 13397 Marseille, France
O. Thomas
Affiliation:
TECSEN, CNRS, Université of Aix-Marseille III, Faculté St Jérôme, 13397 Marseille, France
M. Ignat
Affiliation:
LTPCM-INPG, CNRS, Domaine Universitaire, BP 75, 38402 St Martin d'Hères, France
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Abstract

The thermomechanical behavior is investigated of SiCN-encapsulated blanket Physical Vapor Deposited (PVD) and Electrochemically Deposited (ECD) Cu films. At lower ECD Cu film thicknesses an anomalous shape and a tail of the stress-temperature curve are observed, which are not caused by impurities at the interfaces, but are correlated to highly textured microstructure. Repeated thermal cycling of up to 400 °C does not markedly change the texture of the films, but a significant texture change takes place with increasing ECD Cu thickness. Thermal cycling induces grain growth for thicker films only. Impurity content and distribution in the PVD films do not change due to cycling.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 875: Symposium O – Thin Films - Stresses and Mechanical Properties XI , 2005 , O4.5
Copyright
Copyright © Materials Research Society 2005

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