Progress of pyroelectric material for uncooled infrared detector

In this article,the advantages of pyroelectric uncooled infrared detect technique is analysed.The pyroelectric materials,monocrystal,high-molecular organic polymer and composite,metal oxide ceramics and thin film,which are widly used at present for various uncooled infrared detectors have been introduced.At last the trend of development of the pyroelectric materials is predicted.The superiority of ferroelectric pyroelectric ceramics is pointed out,the applications of which are as normal pyroelectric material,pyroelectric material for dielectric bolometer and pyroelectric material of diffuse phase transition.The research results of the materials of representations is presented.In the end,it points out that it is important to develop the preparation technique for thin film which of high performance,big size,and is easy to process.On base of that,combining with semiconductor technology,the high performance and extensive pyroelectric infrared focal planes can be made.