Implementation of Band-to-Band Tunneling Phenomena in a Multisubband Ensemble Monte Carlo Simulator: Application to Silicon TFETs
Autor: | Cem Alper, Carlos Sampedro, Francisco Gamiz, Adrian M. Ionescu, Jose L. Padilla, C. Medina-Bailon |
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Rok vydání: | 2017 |
Předmět: |
Discretization
Silicon Monte Carlo method tunnel field-effect transistors chemistry.chemical_element 02 engineering and technology 01 natural sciences 7. Clean energy quantum confinement Quantization (physics) TFET Quantum mechanics 0103 physical sciences MOSFET Rectangular potential barrier Electrical and Electronic Engineering BTBT MS-EMC Quantum tunnelling 010302 applied physics Physics Multi-Subband Ensemble Monte Carlo band-to-band tunneling 021001 nanoscience & nanotechnology Electronic Optical and Magnetic Materials Computational physics chemistry Quantum dot 0210 nano-technology |
Zdroj: | Digibug. Repositorio Institucional de la Universidad de Granada instname Digibug: Repositorio Institucional de la Universidad de Granada Universidad de Granada (UGR) IEEE Transactions on Electron Devices |
ISSN: | 1557-9646 0018-9383 |
DOI: | 10.1109/ted.2017.2715403 |
Popis: | Tunnel FETs (TFETs) are in the way to become an alternative to conventional MOSFETs due to the possibility of achieving low subthreshold swing combined with small OFF current levels, which allows operation at low $V_{\mathrm {DD}}$ . In this paper, a nonlocal band-to-band tunneling model has been successfully implemented into a multisubband ensemble Monte Carlo (MS-EMC) simulator and applied to ultrascaled silicon-based n-type TFETs. We have considered two different criteria for the choice of the tunneling path followed by the carriers when crossing the potential barrier, which leads to different distributions of the generated electron–hole pairs. Subband discretization due to field–induced quantum confinement has been considered. TCAD simulations accounting for quantization effects are considered for comparison purposes providing a very accurate agreement with MS-EMC results. |
Databáze: | OpenAIRE |
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