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In this letter, fin-shape tri-gate $\beta$-Ga$_{2}$O$_{3}$ lateral MESFETs are demonstrated with a high power figure of merit of 0.95 GW/cm$^{2}$ - a record high for any $\beta$-Ga$_{2}$O$_{3}$ transistor to date. A low-temperature undoped…

Low power consumption in both static and dynamic modes of operation is a key requirement in modern, highly scaled nanoelectronics. Tunneling field-effect transistors (TFETs) that exploit direct band-to-band tunneling of charges and exhibit…

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…

材料科学 · 物理学 2014-08-19 Bhupesh Bishnoi , Bahniman Ghosh

Tunnel Field Effect Transistors (TFET) have extremely low leakage current, exhibit excellent subthreshold swing and are less susceptible to short channel effects. However, TFETs do face certain special challenges, particularly with respect…

介观与纳米尺度物理 · 物理学 2010-10-19 Sneh Saurabh , M. Jagadesh Kumar

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…

介观与纳米尺度物理 · 物理学 2015-05-19 Sneh Saurabh , M. Jagadesh Kumar

Ultra-thin (UT) oxide semiconductors are promising candidates for back-end-of-line (BEOL) compatible transistors and monolithic three-dimensional integration. Experimentally, UT indium oxide (In$_2$O$_3$) field-effect transistors (FETs)…

应用物理 · 物理学 2023-11-07 Linqiang Xu , Lianqiang Xu , Jun Lan , Yida Li , Qiuhui Li , Aili Wang , Ying Guo , Yee Sin Ang , Ruge Quhe , Jing Lu

This letter presents the bulk diamond field-effect transistor (FET) with the highest current value reported at this moment. The goal was to drastically increase the current of this type of device by increasing the total gate width thanks to…

应用物理 · 物理学 2024-09-06 Damien Michez , Juliette Letellier , Imane Hammas , Julien Pernot , Nicolas C. Rouger

Here, we propose a Charge Plasma (CP)-based Germanium Double Gate Tunnel Field-Effect Transistor (Ge-DGTFET) device structure, where a CP is induced in the heavily doped source region using the work function engineering of source electrode.…

应用物理 · 物理学 2022-12-29 Sambhu P. Malik , Ajeet K. Yadav , Robin Khosla

This work reports the fabrication and characterization of a NiOx/\b{eta}-Ga2O3 heterojunction diode (HJD) that uses a metallic nickel (Ni) target to deposit NiOx layers via reactive RF magnetron sputtering and lift-off processing with >3 kV…

应用物理 · 物理学 2024-09-27 Yizheng Liu , Saurav Roy , Carl Peterson , Arkka Bhattacharyya , Sriram Krishnamoorthy

In this work, we propose a new Stepped Oxide Hetero-Material Trench (SOHMT) power MOSFET with three sections in the trench gate (an N+ poly gate sandwiched between two P+ poly gates) and having different gate oxide thicknesses (increasing…

材料科学 · 物理学 2010-08-19 Raghvendra S. Saxena , M. Jagadesh Kumar

We demonstrate a gate dielectric engineering approach leveraging an ultrathin, atomic layer deposited (ALD) silicon oxide interfacial layer (SiL) between the amorphous oxide semiconductor (AOS) channel and the high-k gate dielectric. SiL…

We demonstrate over 3 kV gate-pad-connected field plated (GPFP) $\beta$-Ga$_2$O$_3$ lateral MESFETs with high lateral figure of merit (LFOM) using metalorganic vapor phase epitaxy (MOVPE) grown channel layers and regrown ohmic contact…

In this paper we have developed a two dimensional (2D) analytical model for surface potential and drain current for a long channel Dual Material Gate (DMG) Silicon-on-Insulator (SOI) Tunneling Field Effect Transistor (TFET). This model…

介观与纳米尺度物理 · 物理学 2014-05-27 Rajat Vishnoi , M. Jagadesh Kumar

In this paper, we propose a simulation-based novel Split-Gate Trench MOSFET structure with an optimized fabrication process to enhance power efficiency, switching speed, and thermal stability for high-performance semiconductor applications.…

Ga2O3 is a wide-band-gap semiconductor of great interest for applications in electronics and optoelectronics. Two-dimensional (2D) Ga2O3 synthesized from top-down or bottom-up processes can reveal brand new heterogeneous structures and…

We demonstrate high yield fabrication of field effect transistors (FET) using chemically reduced graphene oxide (RGO) sheets suspended in water assembled via dielectrophoresis. The two terminal resistances of the devices were improved by an…

介观与纳米尺度物理 · 物理学 2015-05-18 Daeha Joung , A. Chunder , Lei Zhai , Saiful I. Khondaker

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,…

介观与纳米尺度物理 · 物理学 2010-11-25 Siyuranga O. Koswatta , Steven J. Koester , Wilfried Haensch

Steep-slope $\beta$-Ga$_2$O$_3$ nano-membrane negative capacitance field-effect transistors (NC-FETs) are demonstrated with ferroelectric hafnium zirconium oxide in gate dielectric stack. Subthreshold slope less than 60 mV/dec at room…

材料科学 · 物理学 2017-11-03 Mengwei Si , Lingming Yang , Hong Zhou , Peide D. Ye

The performance of ultra-wide band gap materials like $\beta$-Ga$_\mathrm{2}$O$_\mathrm{3}$ is critically dependent on achieving high average electric fields within the active region of the device. In this report, we show that high-k gate…

This work reports the demonstration of ALD-deposited NiO/\b{eta}-Ga2O3 heterojunction diodes (HJDs) on low doped drift layer and highly doped (001) & (100) n+ substrates with experimental observation of a parallel-plane junction electric…

材料科学 · 物理学 2025-03-25 Yizheng Liu , Shane M. W. Witsell , John F. Conley , Sriram Krishnamoorthy