An easily integrable NiSi TOSI-gate/SiON-module for LP SRAM applications based on a single step silicidation of gate and junction
2005
In this paper, we present a CMOS NiSi totally silicided (TOSI)-gate on SiON module, based on a single step silicidation of the junctions and the total gate, and demonstrate its industrial feasibility on SRAM demonstrators. The single step silicidation is achieved by the use of an ultra-low initial Si gate electrode and selective S/D epitaxy, which allows us to avoid any additional CMP step. We show excellent transistor morphology, good device results and first functional NiSi TOSI-gate SRAMs in a state-of-the-art industrial cell size indicating the potential of our TOSI integration module for LP applications
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