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Replacement metal gate (RMG) process requires gate fill with low resistance materials on top of work function tuning metals. Conventional titanium (Ti)-aluminum (Al) based RMG metal fill scheme for low resistance gate formation becomes challenging with further gate length scaling for 20nm node and beyond. In this work, we have demonstrated competitive low resistance gate formation at smaller than...
The combination of self-formed barrier (SFB) and extreme low-k (ELK) dielectric is an attractive candidate for interconnect integration beyond 28nm-node regarding to low RC delay and Cu filling. Attempt is made to understand the formation mechanism of SFB through combinations with various ELK dielectrics in this study. In terms of wiring and dielectric reliabilities, the combination of MnxOy SFB and...
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