Status and trend of pyroelectric uncooled infrared focal plane arrays

Uncooled infrared focal plane arrays(UFPA) exploiting the pyroelectric effect had considerable potential for thermal imaging applications when used in 1-D and 2-D arrays.With hybrid barium strontium titanate(BST) ferroelectric detectors lowering cost,the markets were exploding.The technique advantages were analyzed,the principle and requirements of materials of uncooled infrared focal plane arrays fabricated by pyroelectric materials were introduced,the development trend in hybrid and chip pyroelectric uncooled infrared focal plane arrays was pointed out.The preparation of detector arrays of high uniformity and high performance,in large scale,was considered as the key element in the FPAs development.The problem,the trends in research direction and the key fields of UFPA in China were put forward.