高质量HgCdTe探测器外源掺杂n的Au掺杂工艺研究

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-05-15 DOI:10.1063/5.0268537

Dapeng Jin, Zhikai Gan, Songmin Zhou, Xi Wang, Quanzhi Sun, Xun Li, Liqi Zhu, Chun Lin

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引用次数: 0

摘要

Au是n-on-p HgCdTe技术中最关键的掺杂剂，与Hg空位表现出复杂的相互作用。了解这种相互作用对于制备掺金碲化汞红外探测器至关重要。在这项研究中，我们利用二次离子质谱法和变温霍尔测量法研究了Au原子在空位掺杂的HgCdTe中的扩散特性。结果表明，间隙位置的Au原子迅速扩散到HgCdTe中，直到它们占据空位并充当受体。通过这种方法掺杂Au的红外探测器显示，与空位掺杂的探测器相比，暗电流密度降低了一个数量级，这表明Au原子几乎占据了Hg的空位，实现了有效的结合。

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Study of Au doping processing for high quality extrinsic doped n on p HgCdTe detector

Au, the most pivotal dopant in n-on-p HgCdTe technology, exhibits intricate interactions with Hg vacancy. Understanding this interaction is essential for the fabrication of Au-doped HgCdTe infrared detectors. In this study, we examined the diffusion properties of Au atoms in vacancy-doped HgCdTe utilizing secondary ion mass spectrometry and variable-temperature Hall measurements. The results indicate that Au atoms in interstitial sites rapidly diffuse into HgCdTe, continuing until they occupy vacancy sites and act as acceptors. Infrared detectors doped with Au via this approach exhibited an order of decrease in the dark current density compared to vacancy-doped counterparts, suggesting that Au atoms almost occupy Hg vacancies, achieving effective incorporation.

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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.