Pyroelectric apparatus including effectively intrinsic semicondu

Details Pyroelectric apparatus including effectively intrinsic semicondu Pyroelectric apparatus including effectively intrinsic semicondu

1976-07-30

1977-11-15

Borchelt, Archie R.

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

250336, 250338, G01T 124

Patent

active

040587290

ABSTRACT:
Radiant energy is converted into electric energy by irradiating a capacitor including a layer of an intrinsic or lightly doped semiconductor, having opposite faces on which first and second insulating layers are respectively provided. First and second metallic contacts are respectively provided on the first and second insulating layers. The radiant energy cyclically heats the dielectric to cause cyclic changes in the capacitance and resistance of the capacitor. The capacitor is initially charged to a voltage just below the breakdown voltage of the insulating and semiconductor layers by temporarily connecting it across a D.C. source to cause a current to flow through a charging resistor to the capacitor. The device can be utilized as a radiant energy detector, as well as a solar energy cell.

REFERENCES:
patent: 3450879 (1969-06-01), Seppi
patent: 3851174 (1974-11-01), Tynan et al.
patent: 3932753 (1976-01-01), Stotlar
patent: 3949210 (1976-04-01), Eichinger et al.
patent: 3985685 (1976-10-01), Houlton et al.

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