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A novel sub 20 nm single gate tunnel field effect transistor with intrinsic channel for ultra low power applications

Author:
Pranav Kumar Asthana   Yogesh Goswami   Bahniman Ghosh  


Journal:
Journal of Semiconductors


Issue Date:
2016


Abstract(summary):

We propose a nanoscale single gate ultra thin body intrinsic channel tunnel field effect transistor using the charge plasma concept for ultra low power applications. The characteristics of TFETs (having low leakage) are improved by junctionless TFETs through blending advantages of Junctionless FETs (with high on current). We further improved the characteristics, simultaneously simplifying the structure at a very low power rating using an InAs channel. We found that the proposed device structure has reduced short channel effects and parasitics and provides high speed operation even at a very low supply voltage with low leakage. Simulations resulted in IOFF of ~ 9 × 10−16 A/μm, ION of ~20 μA/μm, ION/IOFF of ~2 × 1010, threshold voltage of 0.057 V, subthreshold slope of 7 mV/dec and DIBL of 86 mV/V for PolyGate/HfO2/InAs TFET at a temperature of 300 K, gate length of 20 nm, oxide thickness of 2 nm, film thickness of 10 nm, low-k spacer thickness of 10 nm and VDD of 0.2 V.


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