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Mechanism of ArF Laser induced Photolytic Deposition of W From WF6 on Etched Si and Unetched Si

Published online by Cambridge University Press:  21 February 2011

Xiafang Zhang ,
Herbert J. Leary Jr.  and
Susan D. Allen
Xiafang Zhang
Affiliation:
Tulane University, Laser Microfabrication Lab, New Orleans, LA 70118
Herbert J. Leary Jr.
Affiliation:
Tulane University, Laser Microfabrication Lab, New Orleans, LA 70118
Susan D. Allen
Affiliation:
Tulane University, Laser Microfabrication Lab, New Orleans, LA 70118
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Abstract

ArF excimer laser-induced photolytic chemical vapor deposition of W on etched Si substrates using tungsten hexafluoride has been studied. Our experimental results show that tungsten film thickness is proportional to the laser irradiation time and fluence, and that the deposition rate initially increases, then decreases with increasing WF6 pressure. the activation energy obtained from an arrhenius plot is much less than that for conventional CVD. a deposition mechanism has been proposed which yields results in good agreement with the experimental dat A. the absorption cross section of WF6 is determined to be 2.75xl0-18 cm2/molecule.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 388: Symposium Q – Film Synthesis and Growth Using Energetic Beams , 1995 , 139
Copyright
Copyright © Materials Research Society 1995

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References

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