Photosensitive junction devices having controllable sensitivity

Details Photosensitive junction devices having controllable sensitivity Photosensitive junction devices having controllable sensitivity

1974-11-19

1976-07-20

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

357 30, 20572, H01L 2714

Patent

active

039708438

ABSTRACT:
The present invention relates to photosensitive device comprising a plurality of superposed semiconductive layers, wherein grooves are hollowed on the face exposed to the irradiance in order to reach and to pass through the junctions upon which the operation of the device is dependent and filled with a passivating agent transparent to the incoming light, the improvement being that the sizes of the grooves are selected in order to obtain a maximum efficient volume exposed to the irradiance close to the junctions upon which the operation of the device is dependent and to minimize the the cross-section of the junction.
The present invention permits to obtained more efficient photothyristors and phototriacs.

REFERENCES:
patent: 3296502 (1967-01-01), Gross et al.
patent: 3529217 (1970-09-01), Van Santen
patent: 3745424 (1973-07-01), Ohuchi et al.
patent: 3761326 (1973-09-01), Weckler
patent: 3814993 (1974-06-01), Kennedy

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