Two-Dimensional Analytical Modeling of Threshold Voltage of Doped Short-Channel Triple-Material Double-Gate (Tm-Dg) MOSFET's

Author(s) Sarvesh Dubey, Dheeraj Gupta, Pramod Kumar Tiwari, S. Jit
Affiliations Department of Electronics Engineering, Institute of Technology, Banaras Hindu University, 221005, Varanasi, India
Issue Volume 3, Year 2011, Number 1, Part 3
Dates Received 04 February 2011, published online 23 June
Citation Sarvesh Dubey, Dheeraj Gupta, Pramod Kumar Tiwari, S. Jit, J. Nano- Electron. Phys. 3 No1, 576 (2011)
PACS Number(s) 85.30.De, 85.30.Tv
Key words DG MOSFET (2) , Surface potential (8) , Threshold voltage (13) , Parabolic approximation, ATLAS (2) .
In this paper, a short-channel threshold voltage model is presented for triple-material double-gate(TM-DG) MOSFET with uniform doping profile in the channel region. To obtain the channel potential expression, the two-dimensional (2D) Poisson’s equation has been solved using the parabolic potential approximation with suitable boundary conditions. Subsequently, the surface potential expression has been employed to derive an analytical expression of thresholod. The threshold voltage variation with various device parameters has been shown. To validate the model, ATLASTM based numerical simulation results have been used.