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Evaluation of diffusion barrier layers in Cu interconnects
Conference proceeding

Evaluation of diffusion barrier layers in Cu interconnects

K Prasad, X.L Yuan, C.Y Li and R Kumar
2002 Conference on Optoelectronic and Microelectronic Materials and Devices. COMMAD 2002. Proceedings (Cat. No.02EX601), v 2002-, pp 373-376
2002

Abstract

Adhesives Conductivity Copper Dielectric constant Dielectric materials Nitrogen Resists Semiconductor films Silicon carbide Silicon compounds
In this paper, we compare the experimental results on the suitability of oxygen or nitrogen containing SiC (SiCO or SiCN) with conventional SiN as a capping layer to prevent Cu diffusion into interlevel dielectric (ILD) layer in a typical Cu based interconnect structure. In addition to reducing the dielectric constant (k) value of the barrier, SiCN and SiCO show comparable performance in terms of preventing the Cu diffusion as well as offering good dielectric breakdown strength.

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Web of Science research areas
Engineering, Electrical & Electronic
Materials Science, Multidisciplinary
Optics
Physics, Applied
Physics, Condensed Matter
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