Pyroelectric Infrared Sensor Using Modified Lead Titanate Ceramics
- 1 January 1985
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 24 (S2)
- https://doi.org/10.7567/jjaps.24s2.463
Abstract
Pyroelectric properties of (Pb, Ca) [(Co1/2W1/2)]TiO3 ceramics have been studied by changing the Ca concentration. With an increase in Ca concentration, the pyroelectric coefficient P and figure of merit F v increased and reached 4.43×10-8 C cm-20C-1, and 0.61×10-10 C cmJ-1, respectively. Pyroelectric characteristics have been improved to twice the values for the PbTiO3 ceramics. The maximum responsivity R v value versus chopping frequency is obtained in a less than 1 Hz frequency range. Responsivity R v and specific detectivity D * are 780 V/W, and 1.1×108 cm √Hz/W at 1 Hz, respectively. The sensor is applicable for use as a human body sensor.Keywords
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