B. Zhao et al., Dual Damascene interconnect of copper and low permittivity dielectric for high performance integrated circuits, EL SOLID ST, 1(6), 1998, pp. 276-278
A dual damascene interconnect of Cu wiring and low dielectric constant (low
-kappa) intra/interlevel-dielectric (ILD) has been successfully demonstrate
d. The low-kappa ILD has led to a significant reduction in intralevel and i
nterlevel capacitance. Low interconnect wiring resistance and via resistanc
e have been achieved in the Cu/low-kappa dual damascene interconnect with g
ood reliability characteristics. (C) 1998 The Electrochemical Society. S109
9-0062(98)07-038-2. All rights reserved.