Variation of MIM damascene capacitor HF performance evolving from 2D to 3D architectures
2008
High-frequency (HF) characterisations of 2D and 3D metal-insulator-metal (MIM) damascene capacitors are presented focusing on the impact of the MIM architecture on the HF performance of capacitors integrated in the back end of line with Si 3 N 4 as the insulating material. Dedicated test structures were integrated and HF characterisation methods developed. Results show that properties (parasitic inductance and cutoff frequency) of MIM capacitors improve with the 3D architecture.
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