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首页> 外文期刊>IEEE Journal of Quantum Electronics >The High-Performance Imaging Verification of Si:P Blocked Impurity Band Detector for Very-Long-Wave-Infrared Spectral Range
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The High-Performance Imaging Verification of Si:P Blocked Impurity Band Detector for Very-Long-Wave-Infrared Spectral Range

机译：SI的高性能成像验证：P用于非常长波红外光谱范围的杂质带探测器

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摘要

Very-long-wave-infrared (VLWIR) photodetectors have attracted great attention from scientists worldwide in the ground and space-based detections, imaging and early warning. However, the application of VLWIR photodetectors on earth is limited by the difficulty of establishing a high spatial-resolution fine imaging system with high-performance detector and large size optical lens. In this work, the VLWIR Si-based blocked-impurity-band (BIB) detector is fabricated and its highperformance imaging system is constructed. The CVD growth progress is optimized by enhancing the doping concentration of absorption layer, and shortening the transition length between blocking and absorption layers. At the temperature of 4.2K, the blackbody responsivity of Si-based BIB detector reaches 20.78A/W and the Noise Equivalent Power is 8.7x10-16W/Hz1/2 at 2.6V. Based on the high performance Si-based BIB detector, an imaging verifying system is set up to detect different roomtemperature objects. Its spatial and temperature resolution reaches 250 mu m and 10mK, respectively. Our results indicate that with suitable optical imaging system, the BIB detector is more effective than the infrared detector of commercial thermal infrared imager in detecting room temperature or low temperature objects like metal. Our work is helpful for the further research on the large scale array integrated BIB imaging and detection system used on earth for explosives detection, biological nondestructive detection as well as security check.
机译：非常长波红外（VLWIR）光电探测器引起了全世界科学家在地面和基于空间的检测，成像和预警中引起了极大的关注。然而，VLWIR光电探测器在地球上的应用受到具有高性能检测器和大尺寸光学透镜的高空间分辨率细成像系统的限制。在这项工作中，制造了VLWIR基于SI的阻塞 - 杂质带（BIB）检测器，并且其高度成像系统被构造。通过增强吸收层的掺杂浓度，并缩短阻挡和吸收层之间的过渡长度来优化CVD生长进度。在4.2k的温度下，Si的围兜检测器的黑体响应率达到20.78A / W，噪声等效功率为8.7x10-16W / Hz1 / 2。基于高性能SI基BIB检测器，设置成像验证系统以检测不同的室温性对象。其空间和温度分别分别达到250亩和10mk。我们的结果表明，利用合适的光学成像系统，BIB检测器比在检测室温或低温物体中检测金属的商业热红外成像器的红外检测器更有效。我们的作品有助于进一步研究大规模阵列集成围兜成像和地球上使用的检测系统，用于爆炸物检测，生物非破坏性检测以及安全检查。

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