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Size effect on effective work function in high-k metal gate MOSFET

机译:尺寸对高k金属栅极MOSFET有效功函数的影响

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摘要

Effective work function is the one of main parameters to determine threshold voltage in high-k metal gate (HKMG) metal-oxide-semiconductor field-effect transistor (MOSFET). This paper reported the relationships between the effective metal work function and gate length in HKMG MOSFET for the first time. The decrease of gate length induces an increment of metal gate's effective work function, which is caused by fact that the filling thickness of the work function metal layer in gate stack becomes thinner with the decrease of gate length. Thus, there is less Al migrates to metal/high-k interface to form dipoles.
机译:有效功函数是确定高k金属栅极(HKMG)金属氧化物半导体场效应晶体管(MOSFET)的阈值电压的主要参数之一。本文首次报道了HKMG MOSFET中有效金属功函数与栅极长度之间的关系。栅极长度的减小引起金属栅极的有效功函数的增加,这是由于以下事实导致的:栅极堆叠中的功函数金属层的填充厚度随着栅极长度的减小而变薄。因此,几乎没有Al迁移到金属/高k界面形成偶极子。

著录项

  • 来源
  • 会议地点 Chengdu(CN)
  • 作者单位

    Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China;

    Semiconductor Manufacturing International Corporation, Shanghai 201203, P. R. China;

    Semiconductor Manufacturing International Corporation, Shanghai 201203, P. R. China;

    Semiconductor Manufacturing International Corporation, Shanghai 201203, P. R. China;

    Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Logic gates; MOSFET; Compounds; Titanium; High-k dielectric materials; Nitrogen;

    机译:逻辑门; MOSFET;化合物;钛;高k介电材料;氮;;

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