Abstract
In-situ X-ray Photoemission Spectroscopy (XPS) has been employed in our lab to study the initial formation of tantalum (Ta) and titanium (Ti) nitride barriers on low dielectric constant (low-k) materials. The effects of low energy (100/500eV) nitrogen ion bombardment were examined in order to understand how the interface could be modified or controlled. This paper summarizes recent results on SiLK* in comparison with Bisbenzocyclobutene (BCB*) (*trademark of the Dow Chemical Company). In-situ XPS studies showed that tantalum or titanium reacted with SiLK very strongly. Carbides and sub-oxides formed immediately upon the deposition of tantalum on SiLK. Compared with BCB, SiLK was found to have both similar binding to tantalum nitride and a similar amount of nitride incorporation near the interface. Moreover, the addition of a low-energy nitrogen ion beam can slightly increase the chemical bonding between the barrier and the low-k without inducing significant intermixing.
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References
P. Abramowitz, “Forming Nitrides with Low Energy Ions on Low-k Dielectrics”, Ph.D. Dissertation, the University of Texas at AUstin, April, 2000.
P. Abramowitz, M. Kiene, P. S. Ho, Effects of a low-energy ion beam on the growth of titanium nitride layers near the interface of a polyimide[Journal Paper], Applied Physics Letters, vol.74, no.22, 31 May 1999, p. 32935.
P. Abramowitz, M. Kiene, P. S. Ho, How low-energy ions can enhance depositions on low-k dielectrics[Journal Paper], Journal of Vacuum Science &Technology A-Vacuum Surfaces & Films, vol.18, no.5, Sept.-Oct. 2000, p.225461.
D. Briggs and M. Sean, Practical Surface Analysis (Wiley, New York, 1990), p. 606637.
S. J. Martin, J. P. Godschalx, M. E. Mills, E. O. Shaffer II, and P. H. Townsend: Development of a Low-Dielectric-Constant Polymer for the Fabrication of Integrated Circuit Interconnect, Advanced Materials, Dec, No. 23, 2000, p. 17691778.
A. Rajagopal, C. Gregoire, J. J. Lemaire, J. J. Pireaux, M. R. Baklanov, S. Vanhaelemeersch, K. Maex, J. J. Waeterloos. Surface characterization of a low dielectric constant polymer-SiLK polymer, and investigation of its interface with Cu. [Conference Paper] AIP for American Vacuum Soc. Journal of Vacuum Science &Technology B, vol.17, no.5, Sept. 1999, p.233640.
PeakFit™, version 4.05, AISN Software Inc., 1991.
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Abramowitz, P., Liu, J., Kiene, M., Ho, P.S., Im, J. (2002). Chemistry in the Initial Formation of Nitride Barriers on Low-K Dielectrics. In: Sacher, E. (eds) Metallization of Polymers 2. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-0563-1_13
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DOI: https://doi.org/10.1007/978-1-4615-0563-1_13
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