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High Electron Mobility Transistors (HEMTs) are most suitable for harsh environments as they operate reliably under extreme conditions such as high voltages, high temperatures, radiation exposure and corrosive atmospheres. In this article,…

Signal Processing · Electrical Eng. & Systems 2025-10-13 Tanjim Rahman , Trupti Ranjan Lenka

We report on the potential of high electron mobility transistors (HEMTs) consisting of high composition AlGaN channel and barrier layers for power switching applications. Detailed 2D simulations show that threshold voltages in excess of 3 V…

Materials Science · Physics 2015-06-23 Sanyam Bajaj , Ting-Hsiang Hung , Fatih Akyol , Digbijoy Nath , Siddharth Rajan

This paper presents an analysis of GaN high-electron-mobility transistors (HEMTs) using both TCAD simulation and experimental characterization. The energy band structure was studied using Nextnano simulation software to observe…

Systems and Control · Electrical Eng. & Systems 2025-07-17 Tanjim Rahman

In this letter, we report on the quantitative estimates of various metrics of performance for \b{eta}-Ga2O3 based High Electron Mobility Transistor (HEMT) for radio frequency (RF) and power applications and compare them with III-nitride…

Galliumnitride has become a strategic superior material for space, defense and civil applications, primarily for power amplification at RF and mm-wave frequencies. For AlGaN/GaN high electron mobility transistors (HEMT), an outstanding…

Materials Science · Physics 2007-09-13 J. Das , H. Oprins , H. Ji , A. Sarua , W. Ruythooren , J. Derluyn , M. Kuball , M. Germain , G. Borghs

This work presents a novel Gallium nitride (GaN) high-electron-mobility transistor (HEMT) based ultraviolet photodetector architecture integrating advanced material and structural design strategies to enhance detection performance and…

Optics · Physics 2025-08-12 Mustafa Kilin , Firat Yasar

III-V heterostructure based high electron mobility transistors (HEMTs) offer superior performance as compared to CMOS silicon transistors owing to the high mobility in the 2D electron gas (2DEG) channel at the heterostructure interface.…

Applied Physics · Physics 2020-10-07 Pallabi Das , Tian-Li Wu , Siddharth Tallur

This paper introduces a robust Pareto design approach for transistor sizing of Gallium Nitride (GaN) High Electron Mobility Transistors (HEMTs), particularly for power amplifier (PA) and low-noise amplifier (LNA) designs in 5G applications.…

Systems and Control · Electrical Eng. & Systems 2025-02-27 Rafael Perez Martinez , Stephen Boyd , Srabanti Chowdhury

Despite considerable advancements, high electron mobility transistors (HEMTs) based on gallium nitride (GaN) channels remain largely limited to power applications below 650 V. For higher power demands, the ultra-wide bandgap semiconductor…

We present the noise performance of High Electron Mobility Transistors (HEMT) developed by CNRS-C2N laboratory. Various HEMT's gate geometries with 2 pF to 230 pF input capacitance have been studied at 4 K. A model for both voltage and…

Instrumentation and Detectors · Physics 2019-12-05 A. Juillard , J. Billard , D. Chaize , J-B Filippini , D. Misiak , L. Vagneron , A. Cavanna , Q. Dong , Y. Jin , C. Ulysse , A. Bounab , X. de la Broise , C. Nones , A. Phipps

A high threshold voltage enhancement-mode GaN HEMT with p-type doped buffer is discussed and simulated. Analytical expressions are derived to explain the role of buffer capacitance in designing and enhancing threshold voltage. Simulations…

Instrumentation and Detectors · Physics 2015-11-17 Sanyam Bajaj , Fatih Akyol , Sriram Krishnamoorthy , Ting-Hsiang Hung , Siddharth Rajan

We report N-polar AlN-based high-electron mobility transistors (HEMTs) with a GaN channel thickness of 5.2 nm on N-polar AlN on sapphire. The threshold voltage is around -2.4 to -3.0 V with saturation currents over 240 mA/mm and on/off…

Materials Science · Physics 2026-05-15 Xu Yang , Sheng Zhang , Ke Wei , Xinhua Wang , Xinyu Liu , Itsuki Furuhashi , Markus Pristovsek

The emerging wide bandgap BAlN alloys have potentials for improved III-nitride power devices including high electron mobility transistor (HEMT). Yet few relevant studies have been carried. In this work, we have investigated the use of the…

Applied Physics · Physics 2020-05-05 Rongyu Lin , Xinwei Liu , Kaikai Liu , Yi Lu , Xinke Liu , Xiaohang Li

A dual-channel AlN/GaN/AlN/GaN high electron mobility transistor (HEMT) architecture is proposed, simulated, and demonstrated that suppresses gate lag due to surface-originated trapped charge. Dual two-dimensional electron gas (2DEG)…

Mesoscale and Nanoscale Physics · Physics 2017-01-04 David A. Deen , Ross Miller , Andrei Osinsky , Brian P. Downey , David F. Storm , David J. Meyer , D. Scott Katzer , Neeraj Nepal

A dual-channel AlN/GaN high electron mobility transistor (HEMT) architecture is demonstrated that leverages ultra-thin epitaxial layers to suppress surface-state related gate lag. Two high-density two-dimensional electron gas (2DEG)…

Mesoscale and Nanoscale Physics · Physics 2016-08-24 David A. Deen , David F. Storm , D. Scott Katzer , Robert Bass , David J. Meyer

In this paper, we have characterized an AlGaN/GaN High Electron Mobility Transistor (HEMT) with a short gate length (Lg $\approx$ 0.15$\mu$m). We have studied the effect of short gate length on the small signal parameters, linearity…

We show that a cryogenic amplifier composed of a homemade GaAs high-electron-mobility transistor (HEMT) is suitable for current-noise measurements in a mesoscopic device at dilution-refrigerator temperatures. The lower noise characteristics…

Mesoscale and Nanoscale Physics · Physics 2021-02-25 Sanghyun Lee , Masayuki Hashisaka , Takafumi Akiho , Kensuke Kobayashi , Koji Muraki

We investigate the influence of AlN buffer thickness on the structural, electrical, and thermal properties of AlGaN/GaN high-electron mobility transistors (HEMTs) grown on semi-insulating SiC substrates by metal-organic chemical vapor…

Materials Science · Physics 2026-01-30 Minho Kim , Dat Q. Tran , Plamen P. Paskov , U. Choi , O. Nam , Vanya Darakchieva

We report on the direct measurement of two-dimensional sheet charge density dependence of electron transport in AlGaN/GaN high electron mobility transistors. Pulsed IV measurements established increasing electron velocities with decreasing…

The cryogenic performance of GaN-based HEMTs (high-electron-mobility transistors) is systematically investigated by the direct current (DC) and low-frequency noise (LFN) characteristics within the temperature (T) range from 300 K to 4.2 K.…

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