Design and Analysis of Dual Source Vertical Tunnel Field Effect Transistor for High Performance

• Published in: Transactions on electrical and electronic materials Vol. 21; no. 1; pp. 74 - 82
• Main Authors: Badgujjar, Soniya, Wadhwa, Girish, Singh, Shailendra, Raj, Balwinder
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Institute of Electrical and Electronic Material Engineers (KIEEME) 01.02.2020; 한국전기전자재료학회
• Subjects: Chemistry and Materials Science; Electronics and Microelectronics; Instrumentation; Materials Science; Optical and Electronic Materials; Regular Paper; 전기공학; Band-2-band tunneling (B2BT); Dual source vertical tunnel FET (DSV-TFET); Low power (LP); Subthreshold slope (SS); Work function (WF); Average subthreshold slope (AVSS)
• ISSN: 1229-7607; 2092-7592
• DOI: 10.1007/s42341-019-00154-2

An optimally designed Dual Source Vertical Tunnel Field Effect Transistors is proposed and investigated using technology computer aided design simulation. The vertical tunnel FET have dispersal of source channel drain in the vertical direction which will enhance the scalability of the simulated device. The benefit of the TFET is switching mechanism which is done by quantum tunnelling method through a barrier instead of thermionic emission over the barrier as that of conventional MOSFETs. The key of this paper, we have developed two-dimensional model of single drain with dual source n-type vertical tunnel field effect transistor. Further introduction to an ultra-thin channel among the drain and gate region will makes aggressive improvement in the numerical simulations of minimum threshold voltage (V T ) of 0.15 V and average subthreshold slope of 3.47 mV/decade. The variation effect in the channel thickness, source height, drain doping, source doping, temperature and work function has been simulated and examined by 2D silvaco TCAD tool. High ON current and low OFF current is recorded as 1.74 × 10 −4  A/µm and 6.92 × 10 −13  A/µm respectively with I ON /I OFF current ratio in order of 10 8 to 10 9 .