Bismuth layered structure pyroelectric detectors

Details Bismuth layered structure pyroelectric detectors Bismuth layered structure pyroelectric detectors

1995-10-10

1998-09-08

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503382, G01J 512

Patent

active

058048235

ABSTRACT:
This invention teaches a method for fabricating an array (1) of pyroelectric detectors (10), and further teaches an array (1) of pyroelectric detectors (10) that include a bismuth layered compound. The array has a substrate (12) and a plurality of pyroelectric detector sites disposed over a surface of the substrate. Each of the pyroelectric detector sites is constructed to have a first electrode (16); a second electrode (20); and a thin layer (18) containing a bismuth layered compound that is interposed between and electrically coupled to the first and second electrodes. In one embodiment the thin layer is comprised of Y1 material (SrBi.sub.2 Ta.sub.2 O.sub.9), while in another embodiment the layer is comprised instead of YZ material (SrBi.sub.2 Nb.sub.2-x Ta.sub.x O.sub.9).

REFERENCES:
patent: 4867850 (1989-09-01), Oka et al.
patent: 5283438 (1994-02-01), Dautriche
patent: 5478610 (1995-12-01), Desu et al.
"Ferroelectric Crystals" F. Jona et al., Pergamon Press (1962), pp. 274-276.
Non-Metallic Solids, vol. 3, "Piezoelectric Ceramics", W.R. Cook Jr. et al., Academic Press (1971), at pp. 223-227.
"Pyroelectric Detectors and Their Applications", Akram Hossain and Muhammad H. Rashid, IEEE 1991.

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