Bialkaline photocathode having increased spectral sensitivity and method of manufacturing same
AssigneeU.S. Philips Corporation
InventorsJacques Nussli, Georges J. P. Marandas, Antoine Farrayre
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Abstract
Photocathode of SbK.sub.2 Cs destined for any electro-optical tube. Photocathode (11) comprising a layer (12) of potassium and caesium antimonide SbK.sub.2 Cs deposited on the substrate (13), also comprising a sub-layer (14) of manganese oxide, intermediate between the said substrate (13) and the said layer (12) of SbK.sub.2 Cs, the said sub-layer (14) of MnO improving in the red the spectral sensitivity of the layer (12) of SbK.sub.2 Cs. Application notably for photomultiplier tubes used in nuclear physics.
Claims4
A photocathode comprising a layer of potassium caesium antimonide SbK.sub.2 Cs deposited on a substrate characterized in that said substrate comprises a sub-layer of manganese oxide MnO in contact with said layer of potassium caesium antimonide and an inert outer layer substrate in contact with said layer of manganese oxide.
Dependencies are inferred from the claim text.