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The high-performance imaging verification of Si:P blocked impurity band detector for very-long-wave-infrared spectral range
IEEE Journal of Quantum Electronics ( IF 2.2 ) Pub Date : 2020-06-01 , DOI: 10.1109/jqe.2020.2976565
Yulu Chen , Bingbing Wang , Yuanzhang Zang , Chuansheng Zhang , Haoxing Zhang , Yi Yuan , Deliang Zhou , Liwei Hou , Ming Pan , Xiaodong Wang

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 high-performance 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 $8.7\times 10^{-16}\text{W}$ /Hz1/2 at 2.6V. Based on the high performance Si-based BIB detector, an imaging verifying system is set up to detect different room-temperature objects. Its spatial and temperature resolution reaches $250~\mu \text{m}$ 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.

中文翻译:

用于超长波红外光谱范围的 Si:P 阻挡杂质带探测器的高性能成像验证

甚长波红外(VLWIR)光电探测器在地面和天基探测、成像和预警方面引起了全世界科学家的极大关注。然而,VLWIR光电探测器在地球上的应用受限于难以建立具有高性能探测器和大尺寸光学透镜的高空间分辨率精细成像系统。在这项工作中,制造了基于 VLWIR Si 的阻塞杂质带 (BIB) 探测器并构建了其高性能成像系统。通过提高吸收层的掺杂浓度、缩短阻挡层和吸收层之间的过渡长度来优化CVD生长进程。在4.2K温度下,Si基BIB探测器的黑体响应度达到20.78A/W,噪声等效功率为8美元。7\times 10^{-16}\text{W}$ /Hz1/2 在 2.6V。在高性能硅基BIB探测器的基础上,建立了成像验证系统,以检测不同的室温物体。它的空间和温度分辨率分别达到 $250~\mu\text{m}$ 和 10mK。我们的结果表明,在合适的光学成像系统下,BIB探测器在探测室温或金属等低温物体方面比商用热红外成像仪的红外探测器更有效。我们的工作有助于进一步研究地球上用于爆炸物检测、生物无损检测和安全检查的大规模阵列集成BIB成像和检测系统。建立成像验证系统以检测不同的室温物体。它的空间和温度分辨率分别达到 $250~\mu\text{m}$ 和 10mK。我们的结果表明,在合适的光学成像系统下,BIB探测器在探测室温或金属等低温物体方面比商用热红外成像仪的红外探测器更有效。我们的工作有助于进一步研究地球上用于爆炸物检测、生物无损检测和安全检查的大规模阵列集成BIB成像和检测系统。建立成像验证系统以检测不同的室温物体。它的空间和温度分辨率分别达到 $250~\mu\text{m}$ 和 10mK。我们的结果表明,在合适的光学成像系统下,BIB探测器在探测室温或金属等低温物体方面比商用热红外成像仪的红外探测器更有效。我们的工作有助于进一步研究地球上用于爆炸物检测、生物无损检测和安全检查的大规模阵列集成BIB成像和检测系统。BIB探测器在探测室温或金属等低温物体方面比商用热红外成像仪的红外探测器更有效。我们的工作有助于进一步研究地球上用于爆炸物检测、生物无损检测和安全检查的大规模阵列集成BIB成像和检测系统。BIB探测器在探测室温或金属等低温物体方面比商用热红外成像仪的红外探测器更有效。我们的工作有助于进一步研究地球上用于爆炸物检测、生物无损检测和安全检查的大规模阵列集成BIB成像和检测系统。
更新日期:2020-06-01
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