Statistical Variability Analysis in Vertically Stacked Gate All Around FETs at 7 nm Technology

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Abstract

In this paper, the statistical variability in the promoting gate all around field effect transistor (GAAFET) at 7 nm node is performed by 3D TCAD simulation. The effects of random variation sources, such as interface traps fluctuation (ITF), random dopants fluctuation (RDF), work function variation (WFV), and oxide thickness variation (TOXV), are analyzed through 500 investigated samples. A distinct variation dependence is found in fluctuation of DC characteristics. RDF is shown to have great influence on the drive current I ON , while ITF, TOXV, and WFV are significant to fluctuate V TH and SS in the subthreshold region. Besides, the sensitive of trap is detected for the optimization of ITF, and the interaction between ITF and TOXV strengthens the variation of subthreshold parameters.

Original languageEnglish
Title of host publication2018 14th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2018 - Proceedings
EditorsTing-Ao Tang, Fan Ye, Yu-Long Jiang
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538644409
DOIs
StatePublished - 5 Dec 2018
Event14th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2018 - Qingdao, China
Duration: 31 Oct 20183 Nov 2018

Publication series

Name2018 14th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2018 - Proceedings

Conference

Conference14th IEEE International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2018
Country/TerritoryChina
CityQingdao
Period31/10/183/11/18

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