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High frequency performance limits of graphene field-effect transistors (FETs) down to a channel length of 20nm are examined by using self-consistent quantum simulations. The results indicate that although Klein band-to-band tunneling is…

介观与纳米尺度物理 · 物理学 2011-02-09 Jyotsna Chauhan , Jing Guo

Using 2-D self-consistent ballistic quantum transport simulations, we investigate the short-channel behavior of graphene field-effect transistors and its impact on the device transconductance and subsequently the intrinsic cut-off frequency…

介观与纳米尺度物理 · 物理学 2011-10-31 Kartik Ganapathi , Youngki Yoon , Sayeef Salahuddin

The traditional transmission coefficient present in the original Landauer formulation, which is valid for quasi-static scenarios with working frequencies below the inverse of the electron transit time, is substituted by a novel…

介观与纳米尺度物理 · 物理学 2021-03-24 Matteo Villani , Simone Clochiatti , Werner Prost , Nils Weimann , Xavier Oriols

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…

介观与纳米尺度物理 · 物理学 2016-12-01 Jun Z. Huang , Pengyu Long , Michael Povolotskyi , Gerhard Klimeck , Mark J. W. Rodwell

High frequency operation of tunneling real-space transfer transistor (TRSTT) in the negative differential resistance (NDR) regime is assessed by calculating the device common source unity current gain frequency (fT) range with a small…

介观与纳米尺度物理 · 物理学 2011-12-12 Wen Huang , Xin Yu , Shi-Lin Zhang , Lu-Hong Mao , Jean-Pierre Leburton

Scaling of GaN high-electron-mobility transistors (HEMTs) usually increases gate leakage current and deteriorates breakdown characteristic, limiting the maximum drain current and output power density. These bottlenecks can be circumvented…

应用物理 · 物理学 2021-01-26 Peng Cui , Hang Chen , John Q. Xiao , Yuping Zeng

A tunneling transistor without heterojunction as a theoretical design, or more precisely controlled electron current transmission by barrier potential, is under consideration. The electrons from the conduction band of the source tunnel…

应用物理 · 物理学 2023-04-27 Pawel Pfeffer

Theoretical predictions are made for the current-voltage characteristics of two-dimensional heterojunction interlayer tunneling field-effect transistors (Thin-TFETs), focusing on the magnitude of the current that is achievable in such…

介观与纳米尺度物理 · 物理学 2017-09-22 Jun Li , Yifan Nie , Kyeongjae Cho , Randall M. Feenstra

The intrinsic performance of "type-II" InP/GaAsSb double heterojunction bipolar transistors (DHBTs) towards and beyond THz is predicted and analyzed based on a multi-scale technology computer aided design (TCAD) modeling platform calibrated…

An InAlN/GaN HEMT device was studied using extensive temperature dependent DC IV measurements and CV measurements. Barrier traps in the InAlN layer were characterized using transient analysis. Forward gate current was modelled using…

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…

介观与纳米尺度物理 · 物理学 2010-11-17 Kartik Ganapathi , Youngki Yoon , Sayeef Salahuddin

In-plane heterojunction tunnel field effect transistors based on monolayer transition metal dichalcogenides are studied by means of self-consistent non-equilibrium Green's functions simulations and an atomistic tight-binding Hamiltonian. We…

介观与纳米尺度物理 · 物理学 2018-11-14 Jean Choukroun , Marco Pala , Shiang Fang , Efthimios Kaxiras , Philippe Dollfus

Vertical tunneling field-effect-transistor (FET) based on graphene heterojunctions with layers of hBN is simulated by self-consistent quantum transport simulations. It is found that the asymmetric p-type and n-type conduction is due to work…

介观与纳米尺度物理 · 物理学 2015-06-05 S. Bala Kumar , Gyungseon Seol , Jing Guo

Top-gated graphene transistors operating at high frequencies (GHz) have been fabricated and their characteristics analyzed. The measured intrinsic current gain shows an ideal 1/f frequency dependence, indicating an FET-like behavior for…

其他凝聚态物理 · 物理学 2015-05-13 Yu-Ming Lin , Keith A. Jenkins , Alberto Valdes-Garcia , Joshua P. Small , Damon B. Farmer , Phaedon Avouris

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…

材料科学 · 物理学 2009-09-30 Pei Zhao , Jyotsna Chauhan , Jing Guo

We investigate the current-voltage characteristics of high-transparency superconductor-insulator-normal metal (SIN) junctions with the specific tunnel resistance below 30 kOhm per square micron. The junctions were fabricated from different…

介观与纳米尺度物理 · 物理学 2009-11-11 S. V. Lotkhov , D. V. Balashov , M. I. Khabipov , F. -I. Buchholz , A. B. Zorin

In the paper the version of the field effect tunnel nano transistor on quantum well is researched, where the control voltage is applied to the barriers surrounding the quantum well, and electron drain comes from the quantum well. Electrons…

强关联电子 · 物理学 2015-01-06 Valery A. Zhukov , V. G. Maslov

Interband quantum tunneling of electrons in semiconductors is of intense recent interest as the underlying transport mechanism in tunneling field-effect transistors. Such transistors can potentially perform electronic switching with lower…

材料科学 · 物理学 2015-06-15 Nan Ma , Debdeep Jena

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…

介观与纳米尺度物理 · 物理学 2016-08-30 Hesameddin Ilatikhameneh , Gerhard Klimeck , Joerg Appenzeller , Rajib Rahman

In this work, the performance of Tunnel Field-Effect Transistors (TFETs) based on two-dimensional Transition Metal Dichalcogenide (TMD) materials is investigated by atomistic quantum transport simulations. One of the major challenges of…

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