Impact of a Moderately Doped Contact Layer on Breakdown Voltage in AlGaN/GaN Gated-Anode Diodes for Microwave Rectification

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Electron Devices Pub Date : 2025-01-28 DOI:10.1109/TED.2025.3530870

Tomoya Watanabe;Hidemasa Takahashi;Ryutaro Makisako;Akio Wakejima;Yuji Ando;Jun Suda

引用次数: 0

Abstract

We fabricated a gated-anode diode employing an AlGaN/GaN high electron mobility transistor (HEMT) to serve as a rectification device in a 5.8-GHz band microwave wireless power transmission (WPT) system. To enhance the breakdown voltage and enable the devices to handle high power, a moderately doped contact layer was proposed and its impact on device performance was comprehensively investigated. We confirmed that medium doping facilitated depletion, achieving high breakdown voltage even with a short gate-to-contact spacing. However, an increase in contact resistance and a consequent decrease in forward current were observed as adverse effects. By optimizing the doping concentration, we successfully enhanced the breakdown voltage while suppressing the current drop, achieving a high-power density of 7.0 W/mm.

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来源期刊

IEEE Transactions on Electron Devices 工程技术-工程：电子与电气

CiteScore

5.80

自引率

16.10%

发文量

937

审稿时长

3.8 months

期刊介绍： IEEE Transactions on Electron Devices publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors. Tutorial and review papers on these subjects are also published and occasional special issues appear to present a collection of papers which treat particular areas in more depth and breadth.