Abstract
A quadrupole mass analyzer was used to detect the neutral products extracted downstream from a CF4/O2 RF discharge at 80 mtorr. mtorr. Stable discharge products were investigated as a junction of plasma power, residence time, oxygen concentration, and plasma voltage standing-wave ratio. In general, as plasma power increased from 10 to 200 W, production of CO increased while the measured mole fractions of CO2 and COF2 stabilized. The ratio of' CO to CO, decreases! at low plasma powers as the oxygen concentration increased. ,4n increase in the relative conversion of CF4 to oxygenated products occurred at both low plasma powers and low oxygen concentrations. Chemical mechanisms are suggested to account for these results.
Similar content being viewed by others
References
R. A. Gottscho and T. A. Miller,Pure Appl. Chem. 56, 189 (1984).
W. R. Harshbarger, R. A. Porter, T. A. Miller, and P. Norton,Appl. Spectrosc. 31, 201 (1977).
G. Turban, B. Grolleau, P. Launay, and P. Briaud,Rev. Phys. Appl. 20, 609 (1985).
G. Smolinsky and D. L. Flamm,J. Appl. Phys. 50, 4982 (1979).
J. P. Booth, G. Hancock, and N. D. Perry,Appl. Phys. Lett. 50, 318 (1987).
M. J. Kushner,J. Appl. Phys. 53, 2923 (1982).
I. C. Plumb and K. R. Ryan,Plasma Chem. Plasma Process.6, 205 (1986).
K. R. Ryan and I. C. Plumb,Plasma Chem. Plasma Process.4, 271 (1984).
D. Rapp and P. Englander-Golden,J. Chem. Phys. 43, 1464 (1965).
UTI Model 1000 Operating and Service Manual, UTl Instruments Company, Appendix B (1983).
P. E. Clarke, D. Field, A. J. Hydes, D. F. Klemperer, and M. J. Seakins,J. Vac. Sci. Technol. B 3, 1614 (1985).
W. H. Beattie,Appl. Spectrosc. 29, 334 (1975).
D. I. Slovetskii and A. A. Deryugin,Khim. Vys. Energ. 16, 540 (1982).
C. I. M. Beenakker, J. H. J. van Dommelen, and R. P. J. van de Pol,J. Appl. Phys. 52, 480 (1981).
D. L. Flamm, V. M. Donnelly, and D. E. Ibbotson,J. Vac. Sci. Technol. B 1, 23 (1983).
G. L. Dybwad,Int. J. Hybrid Microelectron. 5, 175 (1982).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Martz, J.C., Hess, D.W. & Anderson, W.E. A mass spectrometric analysis of CF4/O2 plasmas: Effect of oxygen concentration and plasma power. Plasma Chem Plasma Process 10, 261–275 (1990). https://doi.org/10.1007/BF01447130
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01447130