Photoelectric conversion device, method of driving photoelectric

Details Photoelectric conversion device, method of driving photoelectric Photoelectric conversion device, method of driving photoelectric

1997-03-26

1998-11-24

Ngo, Ngan V.

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

2502081, H01L 3100

Patent

active

058411801

ABSTRACT:
In order to restrain shifts of the flat-band voltage by driving a photoelectric conversion element and to assure a broad dynamic range, high S/N ratio, and stable characteristics, a photoelectric conversion device, which has, on an insulating substrate, a first electrode layer, a first insulating layer for blocking passage of both a carrier of a first type and a carrier of a second type having a different polarity from that of the carrier of the first type, a photoelectric conversion semiconductor layer, an injection blocking layer for blocking injection of the carrier of the first type into the semiconductor layer, and a second electrode layer, has a switch means for repetitively performing, in a predetermined order, following three operation modes for applying an electric field to the individual layers of the photoelectric conversion element: (1) a photoelectric conversion mode for producing and accumulating a charge in correspondence with an incident light amount; (2) a refresh mode for refreshing the charge accumulated in the photoelectric conversion element; and (3) a flat-band voltage shift restraining mode for restraining shifts of the flat-band voltage of the photoelectric conversion element.

REFERENCES:
patent: 5060040 (1991-10-01), Saika et al.
patent: 5317406 (1994-05-01), Kobayashi et al.
patent: 5335094 (1994-08-01), Kaifu et al.

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