GaN-Based Electronic Materials and Devices

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Semiconductor Devices".

Deadline for manuscript submissions: closed (15 February 2025) | Viewed by 2464

Special Issue Editor


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Guest Editor
Department of Semiconductor, Dong-A University, Busan 49315, Republic of Korea
Interests: design of high power density electric machines for sectors such as automotive; defence; aeronautics

Special Issue Information

Dear Colleagues,

Over the last decade, GaN-based electronic devices for power or radio frequency (RF) applications have been extensively researched due to their extraordinary material properties. Firstly, it is very important to grow high-quality GaN-based epitaxial layers on foreign substrates such as Si (111) and SiC by MOCVD, MBE, HVPE, etc. Based on these high-quality epitaxial layers, the electronic devices for high-power and high-frequency applications will be fabricated with an optimized fabrication process. In addition, to improve the device’s performance, the design and layout of these devices are very important to the simulation tool. GaN-based 3D nanostructured electronics devices such as FinFET, nanowires, and nanosheets have been studied with the advantages of device structure for gate controllability. This Special Issue will publish research papers and review articles that focus on recent developments in the GaN-based epitaxial layer and GaN-based electronic device technology.

The following topics will be explored in this Special Issue:

(1) Growth and characterization of GaN-based epitaxial layers.

(2) GaN-based power electronics for high-power applications.

(3) GaN-based RF HEMT for high-frequency applications.

(4) GaN-based 3D nanostructured electronic devices (FinFET, nanowires, and nanosheets).

(5) Simulation-based research of GaN HEMT.

Prof. Dr. Jeong-Gil Kim
Guest Editor

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Keywords

  • GaN HEMT
  • power electronics
  • RF HEMT
  • 3D nanostructured devices
  • TCAD simulation

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Published Papers (2 papers)

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Research

12 pages, 3928 KiB  
Article
Evaluation of a 1200 V Polarization Super Junction GaN Field-Effect Transistor in Cascode Configuration
by Alireza Sheikhan, E. M. Sankara Narayanan, Hiroji Kawai, Shuichi Yagi and Hironobu Narui
Electronics 2025, 14(3), 624; https://doi.org/10.3390/electronics14030624 - 5 Feb 2025
Viewed by 650
Abstract
GaN HEMTs based on polarization super junction (PSJ) technology offer significant improvements in efficiency and power density over conventional silicon (Si) devices due to their excellent material characteristics, which enable fast switching edges and lower specific on-resistance. However, due to the presence of [...] Read more.
GaN HEMTs based on polarization super junction (PSJ) technology offer significant improvements in efficiency and power density over conventional silicon (Si) devices due to their excellent material characteristics, which enable fast switching edges and lower specific on-resistance. However, due to the presence of an uninterrupted channel between drain and source at zero gate bias, these devices have normally-on characteristics. In this paper, the performance of a 1200 V GaN FET utilizing PSJ technology in cascode configuration is reported. The device working principle, characteristics, and switching behavior are experimentally demonstrated. The results show that cascoded GaN FETs utilizing the PSJ concept are highly promising for power device applications. Full article
(This article belongs to the Special Issue GaN-Based Electronic Materials and Devices)
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8 pages, 1892 KiB  
Article
The Impact of Gate Annealing on Leakage Current and Radio Frequency Efficiency in AlGaN/GaN High-Electron-Mobility Transistors
by Junhyung Kim, Gyejung Lee, Kyujun Cho, Jong Yul Park, Byoung-Gue Min, Junhyung Jeong, Hong-Gu Ji, Woojin Chang, Jong-Min Lee and Dong-Min Kang
Electronics 2024, 13(20), 4038; https://doi.org/10.3390/electronics13204038 - 14 Oct 2024
Viewed by 1413
Abstract
Gallium Nitride (GaN) high-electron mobility transistors (HEMTs) are highly promising for high-frequency and high-power applications due to their superior properties, such as a wide energy bandgap and high carrier density. The performance of GaN HEMTs is significantly influenced by the interfacial states of [...] Read more.
Gallium Nitride (GaN) high-electron mobility transistors (HEMTs) are highly promising for high-frequency and high-power applications due to their superior properties, such as a wide energy bandgap and high carrier density. The performance of GaN HEMTs is significantly influenced by the interfacial states of the AlGaN barrier, and gate annealing has emerged as a key process for reducing leakage currents and enhancing DC/RF characteristics. This research investigates the impact of gate annealing on AlGaN/GaN HEMTs, focusing on two main aspects: leakage current reduction and improvements in DC and RF efficiency. Through comprehensive electrical analysis, including DC and RF measurements, the effects of gate annealing were experimentally evaluated. The results show a significant reduction in gate leakage current and noticeable improvements in DC/RF performance for the devices that underwent gate annealing. The study confirms that the annealing process can effectively enhance device performance by modifying the material properties at the gate interface. Full article
(This article belongs to the Special Issue GaN-Based Electronic Materials and Devices)
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