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We demonstrate the smallest FinFET SRAM cell size of 0.063 μm2 reported to date using optical lithography. The cell is fabricated with contacted gate pitch (CPP) scaled to 80 nm and fin pitch scaled to 40 nm for the first time using a state-of-the-art 300 mm tool set. A unique patterning scheme featuring double-expose, double-etch (DE2) sidewall image transfer (SIT) process is used for fin formation...
Highly scaled FinFET SRAM cells, of area down to 0.128 m2, were fabricated using high-kappa dielectric and a single metal gate to demonstrate cell size scalability and to investigate Vt variability for the 32 nm node and beyond. A single-sided ion implantation (I/I) scheme was proposed to reduce Vt variation of Fin-FETs in a SRAM cell, where resist shadowing is a great issue. In the 0.187 m2 cell,...
High-performance CMOS-FinFET with dopant-segregated Schottky source/drain (DS-Schottky S/D) technology has been demonstrated. Thanks to the low parasitic resistance in DS-Schottky S/D, high drive current of 960 muA/mum was achieved for nFET with Lg = 15 nm and Wfin =15 nm at Vd= 1.0 V and Ioff= 100 nA/mum. Furthermore, the propagation delay time has been successfully improved down to less than 5 ps...
We discussed the optimization of structure and doping profile of bulk-FinFETs by using 3D process and device simulations. The channel profile was determined so as to realize higher drive current as well as lower punch-through current. The analysis of stress field for bulk-FinFETs and SOI-FinFETs revealed that the channel stress induced by a stress liner (SL) in the bulk-FinFET is larger than that...
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