热释电非制冷红外焦平面现状及发展趋势

一维和二维阵列的热释电非制冷红外焦平面非常适合应用于热成像.混合式的BST铁电探测器降低了成本,市场潜力巨大.分析了热释电非制冷红外焦平面阵列探测技术的优势,介绍了热释电非制冷红外探测器工作原理及热释电非制冷红外焦平面阵列对探测材料的要求,指出了混合式及单片式热释电非制冷红外焦平面阵列发展趋势.制备高一致性和高性能的大阵列的探测元是发展非制冷红外焦平面的关键,针对我国在热释电非制冷红外焦平面阵列研究方面存在的问题,提出了下一步研究的方向及重点.

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.