Back to results
US 4,233,514 AGranted
Solid state radiation detector and arrays thereof
AssigneeGeneral Electric Company
InventorJack D. Kingsley
Life of this patent
Estimating the term…
Abstract
A layer of X-ray photoconductor is sandwiched between electrodes for conversion of X-radiation to an electrical signal. The photoconductor layer is biased, and films of zinc sulfide may be used between the layer and each electrode, to minimize dark current. Arrays of solid state radiation detectors utilizing the biased photoconductive conversion layer are also disclosed.
Claims29
A solid state radiation detector, comprising:
- a layer having first and second opposed surfaces, said layer being of a photoconductive material characterized by a change in the electrical conductance between said first and second opposed surfaces responsive to absorption of radiation quanta within said layer;
- a first electrode fabricated upon the first layer of said surface;
- a second electrode fabricated upon the second surface of said layer;
- and
- a film fabricated between at least one of said first and second layer surfaces and the associated one of said first and second electrodes, of a material selected to reduce the dark current of the photoconductor material of said layer.
2 more elements
A solid state radiation detector array comprising:
- an insulative substrate having a surface;
- a plurality of elongated first electrodes fabricated upon said substrate surface, each of said first electrodes being substantially parallel to, and spaced from , each adjacent first electrode;
- a layer of a photoconductive material covering said plurality of the first electrodes and the substrate surface adjacent thereto, said photoconductive material characterized by a change in the electrical conductance between a first surface of said layer nearest to said plurality of electrodes and an opposite surface of said layer furthest from said plurality of electrodes, responsive to absorption of incident radiation quanta within said layer, said photoconductive layer having a surface substantially transverse to the first and second opposed surfaces, for reception of radiation quanta therethrough;
- a sheet electrode fabricated upon said surface of said layer furthest from said plurality of first electrodes;
- and
- a film of material disposed between said another surface of said photoconductive layer and said sheet electrode for reducing the magnitude of the dark current of the photoconductor material layer.
3 more elements
Dependencies are inferred from the claim text.