碲镉汞器件空间辐射损伤研究的进展  

Research Advances in Space Radiation Damage of Mercury Cadmium Telluride Devices

作　　者：王忆锋[1] 田萦[1] 

机构地区：[1]昆明物理研究所,云南昆明650223

出　　处：《红外》2011年第4期1-6,共6页Infrared

摘　　要：碲镉汞(MCT)红外探测器在天基平台中的应用正在逐渐增多,运行于空间辐射环境这一特点给其功能实现带来了挑战。MCT器件的独特性质要求人们对空间辐射效应给予特别考虑。目前,通过利用CdTe钝化MCT探测器技术,器件的总剂量脆弱性问题已经得到解决。随着材料质量的改进(例如通过降低原生缺陷浓度),MCT器件更容易受到位移损伤引入缺陷的影响。介绍了部分已发表的有关MCT辐射效应研究的文献资料,讨论了MCT器件辐射损伤效应机理研究的发展历程以及提高MCT器件辐射耐受性的方法。Mercury cadmium telluride（MCT） infrared detectors are more and more used on space-based platforms and the exposure to the radiation environment in space poses a challenge to their performance. Because of the unique properties of MCT devices,the effect of space radiation on them should be taken into account specially.Currently,the total-dose-vulnerability problem in MCT devices has been solved by using CdTe passivation in MCT detector technology.However,with the improvement of material quality（e.g.by reducing the native detect concentration）,the MCT devices are more susceptible to the displacement-damage-induced defects.Some published literatures about radiation effect of MCT are investigated and the research process of radiation damage effect of MCT devices and the techniques used to improve their resistance against radiation are discussed.

关 键 词：碲镉汞 红外探测器 空间辐射损伤 总剂量损伤 位移损伤 辐射加固 

分 类 号：TN15[电子电信—物理电子学]