US 6,982,425 B1
Indirect x-ray image detector for radiology
Henri M. Rougeot, Beaconsfield (Canada); Alain Jean, Boston, Mass. (US); Habib Mani, Montreal-West (Canada); and Ziad Aziz Shukri, Verdun (Canada)
Assigned to FTNI Inc., Montreal (Canada)
Filed on Jun. 17, 1999, as Appl. No. 9/334,671.
Claims priority of application No. 2241779 (CA), filed on Jun. 26, 1998.
Int. Cl. G01T 1/20 (2006.01)
U.S. Cl. 250—370.14 18 Claims
OG exemplary drawing
 
1. An indirect x-ray image detector suitable for radiology, comprising an active matrix substrate with scanning and read-out circuits, wherein over said active matrix substrate there is deposited a photoreceptor made of a co-planar thin layer of amorphous selenium based multilayer structure of n-i-p or p-i-n type, wherein the n-layer is a hole blocking layer, the p-layer is an electron blocking layer and the i-layer sandwiched between the n and p layers is an amorphous selenium layer doped with chlorine and arsenic and wherein each of the n and p layers is less than 1 μm in thickness, said photoreceptor being covered with a light-transparent biasing electrode on top of which there is provided an x-ray conversion scintillator.