Photosensitive device and two frequency driving method thereof

Details Photosensitive device and two frequency driving method thereof Photosensitive device and two frequency driving method thereof

1995-04-12

1997-09-23

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

257 77, 2503384, H01L 2100

Patent

active

056707770

ABSTRACT:
An electronic device utilizing a material having: a photoconductive effect; a trap level for trapping an excited carrier; and an energy band gap, the device comprising: a means for illuminating the material with a first light, the first light having a wavelength corresponding to an energy higher than the energy band gap of the material; a means for illuminating the material with a second light, the second light having a wavelength corresponding to an energy lower than the energy band gap of the material; a means for measuring the quantity of second light transmitted through the material; and a means for obtaining information on the first light illuminated to the material from the quantity of the transmitted second light.

REFERENCES:
patent: 3805124 (1974-04-01), Nagasawa et al.
patent: 5162886 (1992-11-01), Nishibayashi et al.
patent: 5406081 (1995-04-01), Inushima
patent: 5420443 (1995-05-01), Dreifus et al.
patent: 5469424 (1995-11-01), Inushima et al.

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