High electrical frequency infrared detector

Details High electrical frequency infrared detector High electrical frequency infrared detector

1979-03-05

1980-10-28

Edlow, Martin H.

Metal treatment

Stock

Ferrous

357 16, 357 4, 357 55, 148175, H01L 2714

Patent

active

042310539

ABSTRACT:
A thin-film single-crystal infrared detector exhibiting an increased freqcy of response. A closed transverse junction, formed by diffusing a central electrode of an impurity rich metal into a lead-salt film epitaxially grown on an insulating substrate, provides an effective optical area in excess of the junction surface. An ohmic contact is spaced apart from the central electrode. Junction capacitance, a limitation upon the electrical response, is diminished by the detector geometry while detectivity is enhanced. In an alternative embodiment the detector may be segmented to provide directional detection.

REFERENCES:
patent: 3433677 (1969-03-01), Robinson
patent: 3454847 (1969-07-01), Faleeg
patent: 3515957 (1970-06-01), Kitogawa
patent: 3614661 (1971-10-01), Borner
patent: 3716424 (1973-02-01), Schoolar
Nill et al., Appl. Phys. Letters-, vol. 16, No. 5, May 1970, pp. 375-377.

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