Numerical confirmation of inelastic trap-assisted tunneling (ITAT) as SILC mechanism

Ting Kuo Kang, Ming Jer Chen, Chuan Hsi Liu, Yih J. Chang, Shou Kong Fan

研究成果: 雜誌貢獻文章同行評審

11 引文 斯高帕斯(Scopus)

摘要

This paper presents a quite comprehensive procedure covering both the stress-induced leakage current (SILC) and oxide breakdown, achieved by balancing systematically the modeling and experimental works. The underlying model as quoted in the literature features three key parameters: the tunneling relaxation time τ, the neutral electron trap density Nt, and the trap energy level Et. First of all, 7-nm thick oxide MOS devices with wide range oxide areas are throughly characterized in terms of the optically induced trap filling, the charge-to-breakdown statistics, the gate voltage developments with the time, and the SILC I-V. The former three are involved together with a percolation oxide breakdown model to build Nt explicitly as function of the stress electron fluence. Then the overall tunneling probability is calculated with which a best fitting to SILC I-V furnishes τ of 4.0 × 10-13 s and Et of 3.4 eV. The extracted τ is found to match exactly that extrapolated from existing data. Such striking consistencies thereby provide evidence that inelastic trap-assisted tunneling (ITAT) is indeed the SILC mechanism. Differences and similarities of the involved physical parameters between different studies are compared as well.

原文英語
頁(從 - 到)2317-2322
頁數6
期刊IEEE Transactions on Electron Devices
48
發行號10
DOIs
出版狀態已發佈 - 2001 十月

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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