Suppressed gate leakage and enlarged gate over-drive window of E-mode p-GaN gate double channel HEMTs

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-11-13 DOI:10.1063/5.0233528

Hang Liao, Zheyang Zheng, Li Zhang, Tao Chen, Yan Cheng, Kevin J. Chen

引用次数: 0

Abstract

A 600-V p-GaN gate double channel HEMT (DC-HEMT) is presented with a systematic investigation of the gate characteristics, including the leakage current, breakdown, and reliability under forward bias stress. It is found that the gate leakage of the DC-HEMT is substantially lower than that of the p-GaN single channel HEMT (SC-HEMT) owing to suppressed electron spillover that stems from hole storage in the quantum well upper channel. Consequently, the gate breakdown voltage of the DC-HEMT is improved to 14.7 V compared to 12.2 V of the SC-HEMT. Besides, the gate operating voltage margin of the DC-HEMT is expanded to 4.2 V compared to 3.3 V of the SC-HEMT according to the gate lifetime evaluation.

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抑制 E 模式 p-GaN 栅极双通道 HEMT 的栅极漏电并扩大栅极过驱动窗口

本文介绍了一种 600 V p-GaN 栅极双通道 HEMT（DC-HEMT），并对其栅极特性进行了系统研究，包括漏电流、击穿和正向偏压应力下的可靠性。研究发现，DC-HEMT 的栅极漏电流大大低于 p-GaN 单通道 HEMT（SC-HEMT），这是由于量子阱上沟道的空穴存储抑制了电子溢出。因此，DC-HEMT 的栅极击穿电压从 SC-HEMT 的 12.2 V 提高到 14.7 V。此外，根据栅极寿命评估，DC-HEMT 的栅极工作电压裕量从 SC-HEMT 的 3.3 V 扩大到 4.2 V。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.