Light sensitive screen

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H - Electricity

01

L

345/1, 375/40

H01L 31/08 (2006.01) H01J 29/45 (2006.01) H01L 27/146 (2006.01) H01L 31/09 (2006.01)

Patent

CA 1191638

- 1 - Abstract of the Disclosure Disclosed is a light sensitive screen including a transparent conductive film and a photoconductive layer. The transparent film is arranged on the side of incident light. The invention is characterized in that the photo- conductive layer is constructed of one or more layers of one or more photoconductive substances, at least one of which comprises amorphous silicon containing at least 5 atomic-% to 30 atomic-% of hydrogen, whose optical forbidden band gap is 1.65 eV to 2.25 eV and whose peak component in an infrared absorption spectrum at a wave number of 2,100 cm-1 is greater than that at a wave number of 2,000 cm-1. Various characteristics of an imaging device provided with such a light sensitive screen, such as the dark current, the lag and the after image characteristics, are improved.

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