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Improved current drivability and poly-gate depletion of submicron PMOSFET with poly-SiGe gate and ultra-thin nitride gate dielectric

  • C. H. Chen
  • , Y. K. Fang*
  • , C. W. Yang
  • , S. F. Ting
  • , Y. S. Tsair
  • , C. N. Chang
  • , Tuo-Hung Hou
  • , M. F. Wang
  • , M. C. Yu
  • , C. L. Lin
  • , S. C. Chen
  • , C. H. Yu
  • , M. S. Liang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The electrical properties of poly-SiGe gated PMOSFETs have been investigated and compared to the conventional poly-Si gated device. Both types of PMOSFETs use ultra-thin nitride gate dielectric. Poly-SiGe gated devices exhibit 10% higher inversion capacitance, improved subthreshold properties, and superior current drivability. The improvements are contributed to the suppression of the poly-gated depletion effect and the enhanced carrier mobility.

Original languageEnglish
Pages (from-to)597-599
Number of pages3
JournalSolid-State Electronics
Volume46
Issue number4
DOIs
StatePublished - 1 Apr 2002

Keywords

  • Nitride
  • PDE
  • Poly-gate depletion
  • Poly-SiGe

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