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In this work, device performances of tunneling field effect transistors (TFETs) based on phosphorene are explored via self-consistent atomistic quantum transport simulations. Phosphorene is an ultra-thin two-dimensional (2-D) material with…

Mesoscale and Nanoscale Physics · Physics 2015-02-27 Jiwon Chang , Chris Hobbs

We propose superconducting-semiconducting (super-semi) qubit and coupler designs based on high-quality, compact through-silicon vias (TSVs). An interposer "probe" wafer containing TSVs is used to contact a sample wafer with, for example, a…

Quantum Physics · Physics 2023-10-05 Thomas M. Hazard , Andrew J. Kerman , Kyle Serniak , Charles Tahan

We present an atomistic investigation of the influence of strain on the electronic properties of quantum dots (QD's) within the empirical $s p^{3} s^{*}$ tight-binding (ETB) model with interactions up to 2nd nearest neighbors and spin-orbit…

Materials Science · Physics 2009-11-10 R. Santoprete , Belita Koiller , R. B. Capaz , P. Kratzer , Q. K. K. Liu , M. Scheffler

We report the capability to simulate in a quantum mechanical tight-binding (TB) atomistic fashion NW devices featuring several hundred to millions of atoms and diameter up to 18 nm. Such simulations go far beyond what is typically…

Mesoscale and Nanoscale Physics · Physics 2021-02-05 Aryan Afzalian , Tim Vasen , Peter Ramvall , Matthias Passlack

Strain engineering is an important method for tuning the properties of semiconductors and has been used to improve the mobility of silicon transistors for several decades. Recently, theoretical studies have predicted that strain can also…

Materials Science · Physics 2022-10-07 Isha M. Datye , Alwin Daus , Ryan W. Grady , Kevin Brenner , Sam Vaziri , Eric Pop

Strain engineering has played a key role in modern silicon electronics, having been introduced as a mobility booster in the 1990s and commercialized in the early 2000s. Achieving similar advances with two-dimensional (2D) semiconductors in…

We present a compact model for Tunnel Field Effect Transistors (TFET), that captures sev- eral non-idealities such as the Trap Assisted Tunneling (TAT) originating from interface traps (Dit), along with Verilog-A implementation. We show…

Mesoscale and Nanoscale Physics · Physics 2018-10-17 Redwan N. Sajjad , Ujwal Radhakrishna , Dimitri A. Antoniadis

Strain engineering is a powerful strategy for controlling the structural and electronic properties of two-dimensional materials, particularly in systems hosting charge density wave (CDW) order. In this work, we apply uniaxial tensile and…

Strain engineering provides an effective way of tailoring the electronic and optoelectronic properties of semiconductor nanomaterials and nanodevices, giving rise to novel functionalities. Here, we present direct experimental evidence of…

Materials Science · Physics 2021-05-06 Lunjie Zeng , Jonatan Holmer , Rohan Dhall , Christoph Gammer , Andrew M. Minor , Eva Olsson

Black phosphorus (BP) tunneling transistors (TFETs) using heterojunction (He) are investigated by atomistic quantum transport simulations. It is observed that edge states have a great impact on transport characteristics of BP He-TFETs,…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 Fei Liu , Jian Wang , Hong Guo

We propose a Heterojunction Vertical Tunneling FET and show using self-consistent ballistic quantum transport simulations that it can provide very steep subthreshold swings and high ON current, thereby improving the scalability of Tunnel…

Mesoscale and Nanoscale Physics · Physics 2011-03-17 Kartik Ganapathi , Sayeef Salahuddin

This work reports the design and analysis of an n-type tunneling field effect transistor based on InN. The tunneling current is evaluated from the fundamental principles of quantum mechanical tunneling and semiclassical carrier transport.…

Materials Science · Physics 2014-01-03 Krishnendu Ghosh , Uttam Singisetti

We provide a detailed study of the interface Trap Assisted Tunneling (TAT) mechanism in tunnel field effect transistors to show how it contributes a major leakage current path before the Band To Band Tunneling (BTBT) is initiated. With a…

Mesoscale and Nanoscale Physics · Physics 2016-11-23 Redwan N. Sajjad , Winston Chern , Judy L. Hoyt , Dimitri A. Antoniadis

Atomically thin layers of van der Waals (vdW) crystals offer an ideal material platform to realize tunnel field effect transistors (TFETs) that exploit the tunneling of charge carriers across the forbidden gap of a vdW heterojunction. This…

In this paper, we propose a new trench power MOSFET with strained Si channel that provides lower on resistance than the conventional trench MOSFET. Using a 20% Ge mole fraction in the Si1-xGex body with a compositionally graded Si1-xGex…

Materials Science · Physics 2010-08-19 Raghvendra S. Saxena , M. Jagadesh Kumar

In this work, we propose the Bilayer Graphene Tunnel Field Effect Transistor (BG-TFET) as a device suitable for fabrication and circuit integration with present-day technology. It provides high Ion/Ioff ratio at ultra-low supply voltage,…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 G. Fiori , G. Iannaccone

The influence of edge vacancies on the working ability of the planar graphene tunnel field-effect transistor (TFET) is studied at various concentrations and distributions (normal, uniform, periodic) of defects. All calculations are…

Materials Science · Physics 2017-08-02 A. A. Glebov , V. L. Katkov , V. A. Osipov

Strain provides a powerful knob to tailor the electronic properties of semiconductors. Simple yet accurate approximations that capture strain effects in demanding simulations of mesoscopic nanostructures are therefore highly desirable.…

Materials Science · Physics 2025-09-17 Samuel D. Escribano , Alfredo Levy Yeyati , Elsa Prada

Biaxial strain effects on electronic structures and thermoelectric properties of monolayer $\mathrm{PtTe_2}$ are investigated by using generalized gradient approximation (GGA) plus spin-orbit coupling (SOC) for the electron part and GGA for…

Materials Science · Physics 2017-04-26 San-Dong Guo

A triple-heterojunction (3HJ) design is employed to improve p-type InAs/GaSb heterojunction (HJ) tunnel FETs. The added two HJs (AlInAsSb/InAs in the source and GaSb/AlSb in the channel) significantly shorten the tunnel distance and create…

Mesoscale and Nanoscale Physics · Physics 2016-11-01 Jun Z. Huang , Pengyu Long , Michael Povolotskyi , Gerhard Klimeck , Mark J. W. Rodwell