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III-V tunneling field-effect transistors (TFETs) offer great potentials in future low-power electronics application due to their steep subthreshold slope and large "on" current. Their 3D quantum transport study using non-equilibrium Green's…

Mesoscale and Nanoscale Physics · Physics 2016-10-04 Jun Z. Huang , Lining Zhang , Pengyu Long , Michael Povolotskyi , Gerhard Klimeck

Using self-consistent quantum transport simulation on realistic devices, we show that InAs band-to-band Tunneling Field Effect Transistors (TFET) with a heavily doped pocket in the gate-source overlap region can offer larger ON current and…

Mesoscale and Nanoscale Physics · Physics 2010-11-17 Kartik Ganapathi , Youngki Yoon , Sayeef Salahuddin

By means of numerical simulation, we study in this work the effects of uniaxial strain on transport properties of strained graphene heterojunctions and explore the possibility to achieve good performance of graphene transistors using these…

Mesoscale and Nanoscale Physics · Physics 2014-04-03 Viet Hung Nguyen , Huy Viet Nguyen , Philippe Dollfus

Strain is commonly used in metal-oxide-semiconductor technologies to boost on-state performance. This booster has been in production for at least a decade. Despite this, a systematic study of the impact of strain on off-state leakage…

Mesoscale and Nanoscale Physics · Physics 2025-02-03 Felipe Murphy-Armando , Chang Liu , Yi Zhao , Ray Duffy

Tunnel field effect transistor (TFET) devices are attractive as they show good scalability and have very low leakage current. However they suffer from low on-current and high threshold voltage. In order to employ the TFET for circuit…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Sneh Saurabh , M. Jagadesh Kumar

GaSb/InAs heterojunction tunnel field-effect transistors are strong candidates in building future low-power integrated circuits, as they could provide both steep subthreshold swing and large ON-state current ($I_{\rm{ON}}$). However, at…

Mesoscale and Nanoscale Physics · Physics 2016-12-01 Jun Z. Huang , Pengyu Long , Michael Povolotskyi , Gerhard Klimeck , Mark J. W. Rodwell

A bilayer graphene based electrostatically doped tunnel field-effect transistor (BED-TFET) is proposed in this work. Unlike graphene nanoribbon TFETs in which the edge states deteriorate the OFF-state performance, BED-TFETs operate based on…

Mesoscale and Nanoscale Physics · Physics 2016-05-06 Fan W. Chen , Hesameddin Ilatikhameneh , Gerhard Klimeck , Zhihong Chen , Rajib Rahman

Field-effect transistors based on band-to-band tunneling (BTBT) have gained a lot of recent interest due to their potential for reducing power dissipation in integrated circuits. In this paper we present a detailed performance comparison…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Siyuranga O. Koswatta , Mark S. Lundstrom , Dmitri E. Nikonov

Thickness engineered tunneling field-effect transistors (TE-TFET) as a high performance ultra-scaled steep transistor is proposed. This device exploits a specific property of 2D materials: layer thickness dependent energy bandgap (Eg).…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Fan W. Chen , Hesameddin Ilatikhameneh , Tarek A. Ameen , Gerhard Klimeck , Rajib Rahman

In the present work, we have investigated ballistic quantum transport in vertical halo implanted p plus minus GaSb InAs n TFETs. We have investigated the current voltage characteristics, ON current, OFF current leakage, subthreshold swing…

Materials Science · Physics 2014-08-26 Bhupesh Bishnoi , BahnimanGhosh

Tunneling field-effect transistors (TFETs) based on 2D materials are promising steep sub-threshold swing (SS) devices due to their tight gate control. There are two major methods to create the tunnel junction in these 2D TFETs: electrical…

Mesoscale and Nanoscale Physics · Physics 2016-08-30 Hesameddin Ilatikhameneh , Gerhard Klimeck , Joerg Appenzeller , Rajib Rahman

Using a tight-binding mode-space NEGF technique, we explore the essential physics, design and performance potential of the III-V core-shell (CS) nanowire (NW) heterojunction TFET. The CS TFET line-tunneling current increases significantly…

Mesoscale and Nanoscale Physics · Physics 2021-02-05 Aryan Afzalian , Gerben Doornbos , Tzer-Min Shen , Matthiass Passlack , Jeff Wu

Tunneling field-effect transistors (TFETs) have gained a great deal of recent interest due to their potential to reduce power dissipation in integrated circuits. One major challenge for TFETs so far has been achieving high drive currents,…

Mesoscale and Nanoscale Physics · Physics 2010-11-25 Siyuranga O. Koswatta , Steven J. Koester , Wilfried Haensch

In the present work, we have investigated the performances of p plus minus Al0.3Ga0.7Sb Pocket Implanted L shaped GaSb InAs staggered bandgap SG heterojunction vertical n channel tunnel field effect transistors TFETs of 4 nm thin channel…

Materials Science · Physics 2014-08-19 Bhupesh Bishnoi , Bahniman Ghosh

In the present work, we have investigated the performances of L shaped Vertical broken bandgapheterostructureInSb InAsn-channel tunnel field effect transistors TFETs of 4 nm thin channel structures with the gate lengths of 20nm. We have…

Materials Science · Physics 2014-08-13 Bhupesh Bishnoi , Bahniman Ghosh

Tunneling field-effect transistors (FETs) have been intensely explored recently due to its potential to address power concerns in nanoelectronics. The recently discovered graphene nanoribbon (GNR) is ideal for tunneling FETs due to its…

Materials Science · Physics 2009-09-30 Pei Zhao , Jyotsna Chauhan , Jing Guo

A heterojunction tunneling field effect transistor based on armchair graphene nanoribbons is proposed and studied using ballistic quantum transport simulation based on 3D real space nonequilibrium Green's function formalism. By using low…

Mesoscale and Nanoscale Physics · Physics 2013-12-13 Fei Liu , Xiaoyan Liu , Jinfeng Kang , Yi Wang

InAs/GaSb and similar materials systems have generated great interest as a heterojunction for tunnel field effect transistors (TFETs) due to favorable band alignment. However, little is currently understood about how such TFETs are affected…

Mesoscale and Nanoscale Physics · Physics 2014-07-02 Ryan M. Iutzi , Eugene A. Fitzgerald

Strain engineering is a very effective method to tune electronic, optical, topological and thermoelectric properties of materials. In this work, we systematically study biaxial strain dependence of electronic structures and thermoelectric…

Materials Science · Physics 2016-07-19 San-Dong Guo , Lun Zhang

Strain engineering is a promising approach for suppressing the OFF-state conductance in graphene-based devices that arises from Klein tunnelling. In this work, we derive a comprehensive tight-binding Hamiltonian for strained graphene that…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 Maverick Chauwin , Zhuo Bin Siu , Mansoor Bin Abdul Jalil
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