系列热释电陶瓷，用于小面积红外探测器

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1994-08-07 DOI:10.1109/ISAF.1994.522500

R.B. Liu, S. Lin, C. Qu, C. Yao, Y.H. Jin, Y.S. Lin, Y.R. Zhang

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引用次数: 1

摘要

研究了电容补偿前置放大器小面积红外探测器的探测率与热释电材料参数之间的理论关系。制备了基于PbZrO/sub 3/-PbNbFeO/sub 3/-PbTiO/sub 3/体系的系列Sr掺杂热释电陶瓷。上述体系的热释电系数范围为4.4 ~ 7.2/spl倍/10/sup -4/ cm/sup -2/ K/sup -1/，介电常数范围为290 ~ 500。采用上述材料制作小面积(/spl phi/0.3 mm)红外探测器。在测量值和计算值之间有很好的一致性。厚度为0.035 mm的小面积红外探测器的最高探测率D*为3/spl倍/10/sup 8/ cm Hz/sup 1/2/ W/sup -1/，表明该类型热释电陶瓷在焦平面热成像阵列中具有很强的应用潜力。

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Series pyroelectric ceramics used for small area IR detector

Theoretical relationship between the detectivity of small area IR detector with a capacitance compensated preamplifier and the parameters of pyroelectric materials was investigated. The series Sr doped pyroelectric ceramics based on PbZrO/sub 3/-PbNbFeO/sub 3/-PbTiO/sub 3/ system were manufactured. The pyroelectric coefficient ranges of above system are 4.4-7.2/spl times/10/sup -4/ cm/sup -2/ K/sup -1/ and the permittivity ranges are 290-500. Above materials were used to make small area (/spl phi/0.3 mm) IR detector. There is a very good agreement between measured and calculated D* values. The highest detectivity D* of small area IR detector with the thickness 0.035 mm is 3/spl times/10/sup 8/ cm Hz/sup 1/2/ W/sup -1/, which shows that this type pyroelectric ceramics had a strong potential to be a good candidate in focal plane thermal imaging arrays application.

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Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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