具有增强功率和线性性能的AlN/AlxGa1-xN/GaN梯度通道HEMT

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-02-20 DOI:10.1063/5.0245073

Xiang Du, Min-Han Mi, Peng-Fei Wang, Mao-Teng Lu, Yu-Wei Zhou, Can Gong, Xiao-Ping Ouyang, Xiao-Hua Ma, Yue Hao

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引用次数: 0

摘要

在这项工作中，一个AlN/AlxGa1-xN/GaN梯度通道HEMT (AlN。提出了具有增强功率和线性性能的气相色谱HEMT。采用强极化AlN势垒和梯度AlxGa1-xN通道，获得了1806 mA/mm的电流密度和7 V的跨导栅极摆压（GVS-Gm）。在漏极电压（VDS）为8 V的3.6 GHz负载下，AlN。GC HEMT的最大输出功率密度为2.2 W/mm。双音互调失真测量进一步显示，输出三阶截距点（OIP3）为35.5 dBm，相应的线性度优值（OIP3/PDC）为11.2 dB。这种性能的提高可归因于通道中2DEG和3DEG的混合分布，其中高密度的2DEG有助于大的输出容量，平滑的3DEG有助于持续稳定的电荷积累，并随偏压变化而变化。这些结果表明了AlN的潜力。以高功率密度和高线性度为目标的5G应用中的GC HEMT。

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An AlN/AlxGa1-xN/GaN graded channel HEMT with enhanced power and linearity performance

In this work, an AlN/AlxGa1-xN/GaN graded channel HEMT (AlN. GC HEMT) with enhanced power and linearity performance has been proposed. With the adoption of a strong-polarized AlN barrier and a graded AlxGa1-xN channel, a current density of 1806 mA/mm and a transconductance (Gm) gate voltage swing (GVS-Gm) of 7 V were gained. At 3.6 GHz load pull measurements with a drain voltage (VDS) of 8 V, the AlN. GC HEMT exhibited a maximum output power density (Pout) of 2.2 W/mm. Two-tone intermodulation distortion measurement further revealed an output third-order intercept point (OIP3) of 35.5 dBm and a corresponding linearity figure of merit (OIP3/PDC) of 11.2 dB. The improved performance can be attributed to the hybrid 2DEG and 3DEG distribution in the channel, where the high density 2DEG contributes to a large output capacity, and the smooth 3DEG facilitates a sustained and stable charge accumulation with bias variation. These results indicate the potential of AlN. GC HEMT in 5G applications that target high power density and high linearity.

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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.