长波长 InAsSb 检测器二极管的设计考虑因素

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-05-13 DOI:10.1088/1361-6641/ad4a6c

Stefan Svensson, William A. Beck, D. Donetski, G. Kipshidze, G. Belenky

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引用次数: 0

摘要

InAsSb 可以在整个长波长范围（8-12 μm）内吸收光，并且与 HgCdTe（目前该波段的主流探测器技术）具有许多其他相关的基本材料特性。我们在此讨论了与使用分子束外延技术的晶体生长技术方面有关的器件结构，并提出了一种简化设计，其中包括一个 InAsSb 吸收体，其顶层是晶格匹配的 AlInAsSb，具有分级的更宽带隙，表现出自发形成的 p-n 结。通过数值模型预测了 77 K 器件的性能，结果表明至少可以实现 75% 的量子效率。

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Design considerations for a long-wavelength InAsSb detector diode

InAsSb can absorb light across the entire long wavelength range (8-12 μm) and shares many of the other relevant basic materials properties of HgCdTe, the current incumbent detector technology for this band. We discuss here the device architectures in relation to the crystal growth technical aspects using molecular beam epitaxy and propose a simplified design consisting of an InAsSb absorber with a graded wider bandgap top layer of lattice matched AlInAsSb that exhibits a spontaneously formed p-n-junction. The 77 K device performance is predicted with a numerical model that indicates that quantum efficiencies of at least 75% should be achievable.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.