高性能PZNFTSI陶瓷热释电材料与小面积红外探测器的研制  

High Quality PZNFTSI Pyroelectric Ceramics and Its Application in Small Area IR Detector

作　　者：刘瑞斌[1] 林盛卫[1] 瞿翠凤[1] 姚春华[1] 金绮华[1] 林猷慎[2] 张毓荣[2] 

机构地区：[1]中国科学院上海硅酸盐研究所,200050 [2]昆明物理研究所,650223

出　　处：《无机材料学报》1993年第4期461-465,共5页Journal of Inorganic Materials

摘　　要：本文探讨了小面积红外热释电探测器的探测率与热释电材料性能参数之间的关系,制备了热释电系数高达5.1×10^(-4)C.m^(-2)℃^(-1)的 PZNFTSI 型陶瓷热释电材料,并用其制作了一系列φ0.3mm 的小面积探测器,性能最高达5.9x10^8cm Hz^(1/2)W^(-1),远远超过同样尺寸的 LiTaO_3晶体探测器.探测率 D~*的测量结果与理论预测值符合得较好,克服了晶体热释电材料在小面积应用时的局限,为进一步开发红外焦平面列阵热像仪用的热释电材料提供了依据.The relationship between the detectivity of small area IR detector and the parameters ofpyroelectric materials was investigated.Pyroelectric ceramics(PZNFTSI)with high pyroelec-tric coefficient(5.1×10^(-4)C.m^(-2)℃^(-1))was manufactured and used to make a series of smallarea(φ0.3mm)IR detector.The high detectivity 5.9×10~8cmHz^(1/2)W^(-1) can be obtained,whichis much better than that of same size IR detector made by LiTaO_3 crystal.There is a verygood agreement between measured and calculated D~* values,which is a useful guide to developand choose proper pyroelectric materials used for pyroelectric imaging arrays.

关 键 词：热释电陶瓷 红外探测器 铁电陶瓷 

分 类 号：TN215[电子电信—物理电子学]