Multilayer plate for x-ray imaging and method of producing same

Details Multilayer plate for x-ray imaging and method of producing same Multilayer plate for x-ray imaging and method of producing same

G - Physics

03

G

G03G 15/054 (2006.01) G01T 1/24 (2006.01) G03G 5/043 (2006.01) G03G 5/082 (2006.01) G03G 5/14 (2006.01) H01L 27/146 (2006.01) H01L 31/0376 (2006.01) H01L 31/08 (2006.01)

Patent

CA 2184667

A multilayer plate for X-ray imaging is provided, which includes a substrate, a biasing electrode and a selenium-based membrane sandwiched between the substrate and the biasing electrode. The selenium-based membrane comprises a thick photoconductive layer of doped amorphous selenium and one or two thin buffer layers. One of the buffer layers is an amorphous arsenic triselenide layer positioned between the photoconductive layer and the substrate, and the other buffer layer is a unipolar conducting layer of alkali doped selenium positioned between the photoconductive layer and the biasing electrode. Preferably both layers are included. A method of producing such multilayer plates is also disclosed.

L'invention porte sur une plaque multicouches pour imagerie radiographiques comprenant un substrat, une électrode de polarisation et une membrane à base de sélénium placée entre le substrat et l'électrode de polarisation. La membrane en question est composée d'une couche photoconductrice épaisse de sélénium amorphe dopé et d'une ou deux minces couches tampon. Une des couches tampon, composée de triséléniure d'arsenic amorphe, est placée entre la couche photoconductrice et le substrat. L'autre couche tampon constitue une couche conductrice unipolaire de sélénium dopé alcalin placée entre la couche photoconductrice et l'électrode de polarisation. De préférence, les deux couches sont comprises. L'invention divulgue également une méthode de fabrication de telles plaques multicouches.

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