Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-08-16
IEEE Trans. on on Electron Devices, Vol.58, pp.404-410, February 2011
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1109/TED.2010.2093142
In this paper, we propose the application of a Dual Material Gate (DMG) in a Tunnel Field Effect Transistor (TFET) to simultaneously optimize the on-current, the off-current and the threshold voltage, and also improve the average subthreshold slope, the nature of the output characteristics and the immunity against the DIBL effects. We demonstrate that if appropriate work-functions are chosen for the gate materials on the source side and the drain side, the tunnel field effect transistor shows a significantly improved performance. We apply the technique of DMG in a Strained Double Gate Tunnel Field Effect Transistor with a high-k gate dielectric to show an overall improvement in the characteristics of the device along with achieving a good on-current and an excellent average subthreshold slope. The results show that the DMG technique can be applied to TFETs with different channel materials, channel lengths, gate-oxide materials, gate-oxide thicknesses and power supply levels to achieve significant gains in the overall device characteristics.
Kumar Jagadesh M.
Saurabh Sneh
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