Title :
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
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 Hz1/2 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;
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
DOI :
10.1109/ISAF.1994.522500
