红外CCD探测器半导体制冷组件的研制
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摘要
红外CCD成像器件在高温环境下工作,暗电流噪声大大增加,严重影响探测灵敏度。对此,使用半导体制冷和真空封装技术设计了探测器制冷组件,使CCD探测器稳定工作在合适温度,以相对较小的体积和功耗显著地提高红外器件的探测灵敏度。本文对探测器制冷组件整体结构、半导体制冷器选型、冷端耦合结构和热端散热结构进行了研究,最终在高温65℃环境下工作时,CCD探测器制冷温度达到-27℃,组件重量0.8kg。
When the Infrared CCD device works in a high temperature environment,the dark current noise greatly increases,which seriously affects the detection sensitivity. In this paper,a thermoelectric refrigeration components was designed using semiconductor refrigeration and vacuum packaging technology to make the CCD detector work stably at a appropriate temperature.Then,the sensitivity of infrared instruments was enhanced significantly at the cost of relatively less volume and lower power. The overall structure of the detector refrigeration components,TEC selection,cold side structure and hot side heat dissipation structure were studied. Finally,the CCD detector cooling temperature reach to-27℃ when it worked at a high temperature of 65℃,and the component weight was 0. 8 kg.
When the Infrared CCD device works in a high temperature environment,the dark current noise greatly increases,which seriously affects the detection sensitivity. In this paper,a thermoelectric refrigeration components was designed using semiconductor refrigeration and vacuum packaging technology to make the CCD detector work stably at a appropriate temperature.Then,the sensitivity of infrared instruments was enhanced significantly at the cost of relatively less volume and lower power. The overall structure of the detector refrigeration components,TEC selection,cold side structure and hot side heat dissipation structure were studied. Finally,the CCD detector cooling temperature reach to-27℃ when it worked at a high temperature of 65℃,and the component weight was 0. 8 kg.
引文
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[6]董长哲,王宇,等.In Ga As探测器热电制冷方法研究[J].航天返回与遥感,2011(4):53-58.
[2]Meng J H,wang X D,Zhang X X.Transient modeling and dynamic characteristics of thermoelectric cooler[J].Applied Energy,2013,108:340-348.
[3]Riffat S B,Omer S A,Ma X L.A novel thermoelectric refrigeration systememploying heat pipes and a phase changematerial:an experimental investigation[J].Renewable Energy,2001,23:313-323.
[4]任欣,张鹏.有限散热强度下半导体制冷器性能的实验研究[J].低温工程,2003(4):60-61.
[5]仰叶,朱魁章,等.红外探测器封装技术[J].低温与超导,2010(12):4-8.
[6]董长哲,王宇,等.In Ga As探测器热电制冷方法研究[J].航天返回与遥感,2011(4):53-58.