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Bias Temperature Instability (BTI) degradation and recovery with different types of MOL capping layers are investigated in a 20nm Replacement Metal Gate (RMG) CMOS technology. It is found that less compressive RMG capping layers substantially improve reliability and device performance because of less hydrogen within the RMG capping material. The hydrogen content plays an important role in BTI degradation...
In this paper, we present a high performance planar 20nm CMOS bulk technology for low power mobile (LPM) computing applications featuring an advanced high-k metal gate (HKMG) process, strain engineering, 64nm metal pitch & ULK dielectrics. Compared with 28nm low power technology, it offers 0.55X density scaling and enables significant frequency improvement at lower standby power. Device drive...
This work presents a 32 nm SOI CMOS technology featuring high-k/metal gate and an SRAM cell size of 0.149 mum2. Vmin operation down to 0.6 V in a 16 Mb SRAM array test vehicle has been demonstrated. Aggressive ground rules are achieved with 193 nm immersion lithography. High performance is enabled by high-k/metal gate plus innovation on strained silicon elements including embedded SiGe and dual stress...
For nFET, mechanism of stress memorization technique (SMT) has been investigated. It showed, for the first time, that SMT effect on nFET improvement is not only from poly gate, but also from Si at extension area. For pFET, a novel low cost technique to improve device performance by enhanced stress proximity technique (eSPT) with Recessed SD (ReSD) has been demonstrated for the first time. pFET performance...
Dual stress liner process for high performance SOI CMOS technology at 32 nm technology node is improved through the use of dep-etch-dep, etch back, and spacer removal techniques. The stress benefit of DSL is preserved with improved gap fill for the manufacturing of sub-32 nm gate length transistors.
A novel low cost technique to improve device performance by enhanced stress proximity technique (eSPT) with recessed S/D (ReSD) has been demonstrated for the first time. pFET performance improvement of 40% was demonstrated with eSPT. pFET performance with Ion of 520 uA/um at Ioff of InA/um was achieved with the low cost processes. With optimized eSPT, 15% improvement in ring delay has been demonstrated.
We present a 45-nm SOI CMOS technology that features: i) aggressive ground-rule (GR) scaling enabled by 1.2NA/193nm immersion lithography, ii) high-performance FET response enabled by the integration of multiple advanced strain and activation techniques, iii) a functional SRAM with cell size of 0.37mum2, and iv) a porous low-k (k=2.4) dielectric for minimized back-end wiring delay. The list of FET-specific...
Integration of stress proximity technique (SPT) and dual stress liners (DSL) has been demonstrated for the first time. The proximity of stress liner is enhanced by spacer removal after salicidation and before the DSL process. It maximizes the strain transfer from nitride liner to the channel. PFET drive current improvements of 20% for isolated and 28% for nested poly gate pitch devices have been achieved...
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