Research progress on antimonide based type-Ⅱ superlattice mid- and long-infrared detectors
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摘要: 基于锑化物Ⅱ类超晶格结构的中远红外探测器，由于其优异的性能而受到广泛的关注和研究。综述了锑化物Ⅱ类超晶格中远红外探测器的探测机理、材料结构、器件性能和当前的应用情况，介绍了其在中远红外雪崩光电探测器领域的研究现状。锑化物Ⅱ类超晶格探测器的部分性能指标已接近、甚至超过了碲镉汞探测器，并在部分红外装备上得到了应用。而基于锑化物Ⅱ类超晶格的雪崩光电探测器件在中远红外弱光探测领域尚处于起步阶段，与碲镉汞探测器相比还有很大差距，但同时也呈现出了巨大的发展潜力。Abstract: Mid- and long-infrared detector based on antimonide type-Ⅱ superlattice has drawn extensive attention and research due to its excellent performance. The detection mechanism, material structure, device performance and current application of antimonide type-Ⅱ superlattice detectors are reviewed. Additionally, the research progress of type-Ⅱ superlattice in mid- and long-infrared avalanche photodiodes is also introduced. Some indicators of the antimonide type-Ⅱ superlattice detectors have approached, or even exceeded those of the HgCdTe detectors. Such superlattice detectors have been applied in some infrared equipment. Avalanche photodetectors based on antimonide type-Ⅱ superlattice are still in their infancy in the field of mid- and long-infrared week light detection. On the other hand, they show great development potential when compared with HgCdTe avalanche detectors.
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Keywords:
- detectors /
- antimonide /
- type-Ⅱ superlattice /
- mid- and long-infrared /
- avalanche photodiodes
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图 7 美国西北大学制备的基于NBN结构的向短波红外扩展响应的320×256阵列规模的锑化物T2SL焦平面探测器在不同工作温度下的成像效果图[28]
a—100K b—200K c—300K
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