| Ⅱ类超晶格长波红外探测器研究进展 |
| 投稿时间：2020-09-23 修订日期：2020-10-08 点此下载全文 |
| 引用本文：邢伟荣,刘铭,温涛,周朋,胡雨农.Ⅱ类超晶格长波红外探测器研究进展[J].红外,2021,42(3):1~5 |
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| 中文摘要:由于具有带隙可调、电子有效质量大、俄歇复合率低等特点，Ⅱ类超晶格在长波红外和甚长波红外探测方面具有独特优势。介绍了长波超晶格探测器制备方面的研究进展，包括能带结构设计、表面缺陷控制、周期结构控制和表面钝化。最后报道了320×256长波超晶格焦平面阵列及其测试性能。结果表明，在77 K工作温度下，该阵列的截止波长为9.6 μm，平均峰值探测率D*为7×1010 cm·Hz1/2/W，噪声等效温差 (Noise Equivalent Temperature Difference, NETD)为34 mK，响应非均匀性为7%。 |
| 中文关键词:Ⅱ类超晶格 长波 红外探测器 |
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| Research Progress of Type-II Superlattice Long-wave Infrared Detector |
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| Abstract:Due to the characteristics of tunable bandgap, large electron effective mass, and low Auger recombination rate, type-II superlattices have unique advantages in long-wave and very long-wave infrared detection. The research progress in the preparation of long-wave superlattice detectors is introduced, including band structure design, surface defects control, periodic structure control and surface passivation. Finally, a 320×256 long-wave superlattice focal plane array and its test performance are reported. The results show that at an operating temperature of 77 K, the cut-off wavelength of the array is 9.6 μm, the average peak detection rate D* is 7×1010 cm·Hz1/2/W, the noise equivalent temperature difference (NETD) is 34 mK, and the response non-uniformity is 7%. |
| keywords:type-II superlattice long-wave infrared detector |
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