Defects and reliability of GaN‐based LEDs: review and perspectives

M Buffolo, A Caria, F Piva, N Roccato… - … status solidi (a), 2022 - Wiley Online Library
Herein, the main factors and mechanisms that limit the reliability of gallium nitride (GaN)‐
based light‐emitting diodes (LEDs) are reviewed. An overview of the defects …

Recent developments in materials, architectures and processing of AlGaN/GaN HEMTs for future RF and power electronic applications: A critical review

B Mounika, J Ajayan, S Bhattacharya, D Nirmal - Micro and Nanostructures, 2022 - Elsevier
This article critically reviews the architectural novelties, emerging materials (substrate,
buffer, barrier & contact materials), technological advancements, processing techniques …

GaN-based power devices: Physics, reliability, and perspectives

M Meneghini, C De Santi, I Abid, M Buffolo… - Journal of Applied …, 2021 - pubs.aip.org
Over the last decade, gallium nitride (GaN) has emerged as an excellent material for the
fabrication of power devices. Among the semiconductors for which power devices are …

Buffer traps in Fe-doped AlGaN/GaN HEMTs: Investigation of the physical properties based on pulsed and transient measurements

M Meneghini, I Rossetto, D Bisi… - … on Electron Devices, 2014 - ieeexplore.ieee.org
This paper presents an extensive investigation of the properties of the trap with activation
energy equal to 0.6 eV, which has been demonstrated to be responsible for current collapse …

Investigation of the p-GaN gate breakdown in forward-biased GaN-based power HEMTs

AN Tallarico, S Stoffels, P Magnone… - IEEE Electron …, 2016 - ieeexplore.ieee.org
In this letter, we report a detailed experimental investigation of the time-dependent
breakdown induced by forward gate stress in GaN-based power HEMTs with a p-type gate …

Stability and reliability of lateral GaN power field-effect transistors

JA Del Alamo, ES Lee - IEEE Transactions on Electron Devices, 2019 - ieeexplore.ieee.org
GaN electronics constitutes a revolutionary technology with power handling capabilities that
amply exceed those of Si and other semiconductors in many applications. RF, microwave …

Identification of trap states in p-GaN layer of a p-GaN/AlGaN/GaN power HEMT structure by deep-level transient spectroscopy

S Yang, S Huang, J Wei, Z Zheng… - IEEE Electron …, 2020 - ieeexplore.ieee.org
In this work, the deep-level transient spectroscopy (DLTS) is conducted to investigate the
gate stack of the p-GaN gate HEMT with Schottky gate contact. A metal/p-GaN/AlGaN/GaN …

Temperature-Dependent Dynamic in GaN-Based MIS-HEMTs: Role of Surface Traps and Buffer Leakage

M Meneghini, P Vanmeerbeek… - IEEE transactions on …, 2015 - ieeexplore.ieee.org
This paper reports an investigation of the trap** mechanisms responsible for the
temperature-dependent dynamic-R ON of GaN-based metal-insulator-semiconductor (MIS) …

Low-loss and high-voltage III-nitride transistors for power switching applications

M Kuzuhara, H Tokuda - IEEE Transactions on Electron …, 2014 - ieeexplore.ieee.org
This paper describes recent technological advances on III-nitride-based transistors for
power switching applications. Focuses are placed on the progress toward enhancing the …

“Hole Redistribution” Model Explaining the Thermally Activated RON Stress/Recovery Transients in Carbon-Doped AlGaN/GaN Power MIS-HEMTs

N Zagni, A Chini, FM Puglisi… - … on Electron Devices, 2021 - ieeexplore.ieee.org
R ON degradation due to stress in GaN-based power devices is a critical issue that limits,
among other effects, long-term stable operation. Here, by means of 2-D device simulations …