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FinFET has become the mainstream logic device architecture in recent technology nodes due to its superior electrostatic and leakage control [1,2,3,4]. However, parasitic capacitance has been a key performance detractor in 3D FinFETs. In this work, a novel low temperature ALD-based SiBCN material has been identified, with an optimized spacer RIE process developed to preserve the low-k value and provide...
We systematically investigated the impact of R and C scaling to 7nm node (N7) by accounting for FEOL and BEOL holistically. Speed-power performance of plainly scaled N7 turns out to be degraded compared to previous node. BEOL wire resistance (Rwire) multiplied by logic gate input pin cap (Cpin), Rwire×Cpin, is identified as a major limiter of performance and power at N7. Reducing Cpin is crucial to...
The tunneling FET (TFET) is a leading option for energy efficient computation with peak logic performance/watt greater than CMOS. With variation effects, TFET reaches 2X higher peak efficiency than MOSFET by using supply voltages under 0.4V. Dense TFET SRAM bitcell is proposed with VMIN matching this low logic VDD. Projections of device variation enable a comparison of TFET and MOSFET logic and memory...
A performance upgrade of our 14nm FDSOI technology is reported in this paper. Compared to our previous 14nm FDSOI assessment, a −17% delay at the same leakage is demonstrated. We show that the AC performance of 28nm FDSOI at a 0.9V supply voltage is reached at 0.6V in 14nm FDSOI technology. This corresponds to a 50% increase in frequency at the same dynamic power, or a 65% power saving at the same...
For the first time, AC lifetime in Si-cap/Ge and GeO2/Ge pMOSFETs is investigated and it must not be predicted by the conventional DC stress method with a measurement delay. This is because the energy alternating defects are generated in Ge devices but not in Si, which introduces additional generation under DC stress.
We present, for the first time, a holistic data-path driven transistor-interconnect co-optimization method, which systematically isolates the logic-gate and interconnect-wire dominated data-paths in block-level delay-bins (i.e., sub-binning of delay based bins) to significantly improve accuracy of static and dynamic power estimation. It captures the critical interdependence of transistor architecture...
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