Charge storage image device using persistent photoconductivity c

Details Charge storage image device using persistent photoconductivity c Charge storage image device using persistent photoconductivity c

1990-10-15

1991-12-10

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Semiconductor system

2503384, 25037001, 25037012, H01L 310296, G01J 528

Patent

active

050721224

ABSTRACT:
Mixed II-VI crystal semiconductors (10) having the general formula Zn.sub.x Cd.sub.1-x Se, where x is up to about 0.4, are provided which exhibit persistent photoconductivity (PPC) above 70.degree. K. which is quenchable by infrared radiation. An electrical apparatus (12) utilizing the crystal (10) of the invention is also provided. An imaging apparatus (70) is further provided which includes a charge storage image device (72) having an array (82) of mixed II-VI semiconductor elements (84). A visible or an infrared image is stored in array (82) by first initializing array (82) and then exposing elements (84) to the image to be recorded.

REFERENCES:
patent: 3754965 (1973-08-01), Mooney
patent: 4412235 (1983-10-01), Bois

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