Abstract

The photoresponse is investigated in the frequency range of 0.15–15 THz in HgCdTe epitaxial layers with a cadmium concentration from 15.2 to 19.2% grown by molecular-beam epitaxy. It is shown that narrow-gap and gapless HgCdTe solid solutions can be used as detectors of both terahertz and sub-terahertz radiation with a characteristic response time of 2–4 ns and with a sensitivity approaching n-InSb-based detectors widely used in this range.

中文翻译：

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太赫兹和亚太赫兹范围内的窄间隙和无间隙HgCdTe固溶体的光敏性研究

摘要

在HgCdTe外延层中的0.15–15 THz频率范围内，通过分子束外延生长镉浓度为15.2％至19.2％的光响应。结果表明，窄间隙和无间隙HgCdTe固溶体可以用作太赫兹和亚太赫兹辐射的检测器，其特征响应时间为2-4 ns，灵敏度接近n -InSb基检测器范围。