Abstract:Pyroelectric material can bring polarization with the variable temperature caused by infrared radiation. It will generate electric signals in relation to the ratio of temperature variation when it is connected in the circuit. By using pyroelectric effect, a pyroelectric infrared detector can detect infrared radiant energy. Pyroelectric materials can be classified into bulk materials and thin-films in the view of shape, and the latter ones have the features of smaller bulk specific heat, higher sensitivity, lower cost and easier integration. So the preparation, characteristics and application of pyroelectric materials have become a research trend. At present, practical research achievements such as radiometers, audiometers, thermoscopes and so on have been obtained. The promising pyroelectric infrared detectors Will be applied in more fields with the further research being Carried out.

Abstract:The producing process of photovoltaic effect is presented. The mathematic model of photo-electromotive force is established and the influence of parameters on the photo-electromotive force of a reduced photovoltaic detector is discussed.

Abstract:This paper briefly presents some packaging ways of infrared detectors on satellites and mainly describe some critical packaging techniques of infrared detector assembly Dewars. The research and development of these packaging techniques are important to improve infrared detector Dewar assemblies and advance the application of infrared detectors, especially of infrared focal plane arrays.