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A 22nm generation logic technology is described incorporating fully-depleted tri-gate transistors for the first time. These transistors feature a 3rd-generation high-k + metal-gate technology and a 5th generation of channel strain techniques resulting in the highest drive currents yet reported for NMOS and PMOS. The use of tri-gate transistors provides steep subthreshold slopes (∼70mV/dec) and very...
For the first time, Multi-VT UTBOX-FDSOI technology for low power applications is demonstrated. We highlight the effectiveness of back biasing for short devices in order to achieve ION current improvement by 45% for LVT options at an IOFF current of 23nA/μm and a leakage reduction by 2 decades for the HVT one. In addition, fully functional 0.299um2 bitcells with 290mV SNM at 1.1V and Vb=0V operation...
In this paper we compare Fully-Depleted SOI (FDSOI) devices with different BOX thicknesses with or without ground plane (GP). With a simple High-k/Metal gate structure, the 32 nm devices exhibits Ion/Ioff performances well situated for low power (LP) applications. The different BOX thicknesses and ground plane conditions are compared with bulk shrunk technology in terms of variability and noise. 0...
An independent-gate four-terminal FinFET SRAM have been successfully fabricated for drastic leakage current reduction. The new SRAM is consisted of a four-terminal (4T-) FinFET which has a flexible Vth controllability. The 4T-FinFET with a TiN metal gate is fabricated by a newly developed gate separation etching process. By appropriately controlling the Vth of the 4T-FinFET, we have successfully demonstrated...
This paper presents an innovative structure based on 3 dimensional integration technology, where ultra thin inter layer dielectric enables a dynamic threshold voltage (VTH) control. A sequential process flow is proposed to fabricate 3D devices with dynamically tunable VTH. This ability can be exploited to design SRAMs cells with increased stability and surface density compared to planar technology...
The power consumption and the matching will be the principal issues at the 32 nm node and below. In this context, Ultra-Thin Body devices are extensively studied for the end-of-roadmap CMOS. In this paper we present the SON technology, leading to the simple fabrication of sustained mono-Si nano-membranes over an empty tunnel, and discuss on the application of this process to build-up electronic devices...
To increase memory bandwidth with minimum area overhead, the new concept of 3D-stacked memory structure consisting of a small sense amplifier shared with a few 3D memory cells has been presented. The 16 bit 3D-stacked TiO2 memory chip was fabricated and demonstrated. The estimated bandwidth per unit area of 3D-stacked memory in sub-65 nm CMOS technology indicates that the 3D-stacked memory has potential...
Novel 3D stacked gate-all-around multichannel CMOS architectures were developed to propose low leakage solutions and new design opportunities for sub-32 nm nodes. Those architectures offer specific advantages compared to other planar or non planar CMOS devices. In particular, ultra-low IOFF (< 20 pA/mum) and high ION (> 2.2 mA/mum) were demonstrated. Moreover, those transistors do not suffer...
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