Series pyroelectric ceramics used for small area IR detector

Author

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

Author_Institution

Inst. of Ceramics, Acad. Sinica, Shanghai, China

fYear

1991

fDate

33457

Firstpage

812

Lastpage

814

Abstract

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 PbZrO₃-PbNbFeO₃-PbTiO₃ system were manufactured. The pyroelectric coefficient ranges of above system are 4.4-7.2×10^-4 cm^-2 K^-1 and the permittivity ranges are 290-500. Above materials were used to make small area (φ0.3 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 3×10⁸ cm Hz^1/2 W^-1, which shows that this type pyroelectric ceramics had a strong potential to be a good candidate in focal plane thermal imaging arrays application

Keywords

ceramics; ferroelectric materials; infrared detectors; lead compounds; niobium compounds; permittivity; pyroelectric detectors; pyroelectricity; strontium compounds; (PbSr)ZrO₃-PbNbFeO₃-PbTiO₃; 0.035 mm; PbZrO₃:Sr-PbNbFeO₃-PbTiO₃; capacitance compensated preamplifier; focal plane thermal imaging arrays application; highest detectivity; permittivity; pyroelectric coefficient; series pyroelectric ceramics; small area IR detect; Capacitance; Ceramics; Infrared detectors; Manufacturing; Optical imaging; Permittivity measurement; Preamplifiers; Pyroelectricity; Sensor arrays; Strontium;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on

Conference_Location

University Park, PA

Print_ISBN

0-7803-1847-1

Type

conf

DOI

10.1109/ISAF.1994.522500

Filename

522500