Study of Impact of HfO2 gate oxide on the Electrical Characteristics of Nanowire Junction less Transistor

Authors

  • Dahiru Ya’u Gital Department of Mechanical Engineering Tech. ATAP Bauchi, Nigeria
  • Moh’d Adamu Sule Department of Computer Engineering Tech. Federal Polytechnic Kaltungo, Nigeria
  • Abbas Adamu, Sanusi Mohammed Department of Electrical/Electronics Engineering Tech. Federal Polytechnic N’yak Shendam, Nigeria
  • Kabiru A. Saidu Department of Electrical Engineering Tech. ATAP Bauchi, Nigeria
  • Buba Kari Joda Department of Electrical/Electronics Tech. Federal Polytechnic Kaltungo, Nigeria

DOI:

https://doi.org/10.31695/IJASRE.2022.8.11.7

Keywords:

Dielectric constant, Gate oxide, Hafnium dioxide, Junction less Transistor, leakage current

Abstract

This paper proposes hafnium (IV) oxide (HfO2) as gate oxide material of the nanowire junctionless transistor (NJT) to replace conventional silicon dioxide (SiO2). Leakage current usually increased due to an increase of tunneling of electrons in the SiO2 transistor when the thickness oxide (tox) of the gate material is below 2nm. The main advantage of HfO2 is a high dielectric constant k of 20 to 25 which is almost 6 times that of SiO2. Similarly, HfO2 has an energy band gap of 5.3 to 5.7eV. As a result, low leakage current and short channel effects (SCEs) were experienced. An increase in the gate capacitance of the device leads to improving the performance of the device without affecting the enhanced leakage current. All these were achieved by designing and simulating the device using the SDE tools of Sentaurus TCAD. Electrical characteristics were extracted using the Service tools of the software. The performance was significantly increased to approximately 1010 using HfO2 material.

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How to Cite

Dahiru Ya’u Gital, Moh’d Adamu Sule, Abbas Adamu, Sanusi Mohammed, Kabiru A. Saidu, & Buba Kari Joda. (2022). Study of Impact of HfO2 gate oxide on the Electrical Characteristics of Nanowire Junction less Transistor. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE, 8(11), 62–67. https://doi.org/10.31695/IJASRE.2022.8.11.7

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