IEEE Journal of the Electron Devices Society (Jan 2018)

Ferroelectric HfZrO<sub>x</sub> FETs on SOI Substrate With Reverse-DIBL (Drain-Induced Barrier Lowering) and NDR (Negative Differential Resistance)

  • Kuan-Ting Chen,
  • Siang-Sheng Gu,
  • Zheng-Ying Wang,
  • Chun-Yu Liao,
  • Yu-Chen Chou,
  • Ruo-Chun Hong,
  • Shih-Yao Chen,
  • Hong-Yu Chen,
  • Gao-Yu Siang,
  • Chieh Lo,
  • Pin-Guang Chen,
  • M.-H. Liao,
  • Kai-Shin Li,
  • Shu-Tong Chang,
  • Min-Hung Lee

DOI
https://doi.org/10.1109/JEDS.2018.2863283
Journal volume & issue
Vol. 6
pp. 900 – 904

Abstract

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Ferroelectric-Hf1-xZrxO2 FETs on silicon on insulator (SOI) are modeled and demonstrated with improvement on subthreshold swing (SS) and hysteresis (VT-shift), which is based on the capacitance matching concept. The minimum reverse SS = 45 mV/dec and 52 mV/dec are obtained experimentally for SOI and bulk-Si, respectively. The steep SS range (<;60 mV/dec) is extended from ~2.5 (bulk-Si) decades to ~3.5 decades SOI. Reverse-drain-induced barrier lowering and negative differential resistance are confirmed at subthreshold region and weak inversion region, respectively.

Keywords