晶格源/漏应力不匹配的应变N-Mosfet热载流子可靠性

K. Ang, Chunlei Wan, K. Chui, C. Tung, N. Balasubramanian, Ming-Fu Li, G. Samudra, Y. Yeo
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引用次数: 3

摘要

首次研究了一种新型硅碳(Si1 -yCy)源极和漏极(S/D)单轴拉伸应变n沟道晶体管的热载流子可靠性。在相同的Isub/Id比下,应变n- fet的热载流子寿命比对照n- fet的热载流子寿命短。最坏的情况下,热载流子应力发生在最大衬底电流Isub条件下,与VGS = VGS应力相比,导致更高的驱动电流IDsat退化。在标称工作电压下,应变n-FET的热载流子寿命预计将远远超过10年的要求,没有严重的可靠性问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hot Carrier Reliability of Strained N-Mosfet with Lattice Mismatched Source/Drain Stressors
The hot carrier reliability of a novel uniaxial tensile strained n-channel transistor with silicon-carbon (Si1 -yCy) source and drain (S/D) regions is investigated for the first time. Strained n-FETs show reduced hot carrier lifetime than the control n-FETs when stressed at comparable Isub/Id ratio. Worst case hot carrier stressing is observed to occur at maximum substrate current Isub condition which leads to a higher drive current IDsat degradation as compared to the VGS = VGS stress. At nominal operating voltages, the strained n-FET is projected to have a hot carrier lifetime well exceeding the 10-years requirement, showing no severe reliability issues.
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