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GaN Nanowire n-MOSFET with 5 nm Channel Length for Applications in Digital Electronics

Author(s)
Chowdhury, Nadim; Antoniadis, Dimitri A.; Palacios, Tomas
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Abstract
We study the performance of GaN nanowire n-MOSFETs (GaN-NW-nFETs) with a channel length, Lg = 5 nm based on fully ballistic quantum transport simulations. Our simulation results show high ION = 1137μA/μm and excellent on-off characteristics with Q = gm/SS = 188 μS-decade/μm-mV calculated for Ioff = 1 nA/μm and VGS = VDS = VCC = 0.5 V. These results represent: 1) ∼ 15% higher Ion than Si-NW-nFET and 2) ∼ 17% better Q than Si-NW-nFET, all with Lg = 5 nm, thus suggesting the GaN n-channel, an intriguing option for application in logic at sub-10-nm channel length. The superior performance of the GaN channel compared with Si and other semiconductors at this scaled dimension can be attributed to its relatively higher effective mass of electron and lower permittivity.
Date issued
2017-05
URI
https://hdl.handle.net/1721.1/121568
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Microsystems Technology Laboratories
Journal
Electron Device Letters
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Chowdhury, Nadim, Giuseppe Iannaccone, Gianluca Fiori, Dimitri A. Antoniadis and Tomás Palacios. "GaN Nanowire n-MOSFET with 5 nm Channel Length for Applications in Digital Electronics." Electron Device Letters 38, issue 7 (July 2017): pp. 859 - 862.
Version: Author's final manuscript
ISSN
0741-3106
1558-0563

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