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Novel Approach to Reduce Source/Drain Series Resistance in High Performance CMOS Devices Using Self-Aligned CoWP Process for 45nm Node UTSOI Transistors with 20nm Gate Length

机译:使用20nm栅极长度的45nm节点UTSOI晶体管的自对准COMOS器件在高性能CMOS器件中降低高性能CMOS器件源/漏极串联电阻的新方法

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This paper reports a novel, non-epitaxial raised source/drain approach to decrease the parasitic series resistance in nMOSFETs fabricated on UTSOI using a selective electroless metal deposition process. A metallic layer selectively deposited in the source/drain and gate nickel or cobalt silicide regions significantly reduces the parasitic external resistance in nMOSFETs with 10nm body thickness and gate lengths down to 20nm. This approach is fully compatible with a conventional CMOS process flow for both Co and Ni silicides and eliminates the added complexity of a conventional raised source/drain approach. The extremely high deposition selectivity of the process is confirmed through gate leakage measurements.
机译:本文报道了一种新颖的非外延凸出的源/排水方法,以降低使用选择性化学金属沉积工艺在UTSOI上制造的NMOSFET中的寄生串联电阻。选择性地沉积在源/漏极和栅极镍或钴区内的金属层显着降低了NMOSFET中的寄生虫外部电阻,并且栅极长度低至20nm。该方法与用于CO和Ni硅化物的传统CMOS工艺流程完全兼容,并消除了传统凸起源/排水方法的增加的复杂性。通过栅极泄漏测量确认该过程的极高沉积选择性。

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