METHOD FOR CORROSION PROTECTION OF FIELD-EFFECT PHOTOCATHODE Russian patent published in 2005 - IPC

FIELD: semiconductor field-effect photocathodes for manufacturing radiation detectors.

SUBSTANCE: proposed method for manufacturing field-effect photocathode includes vacuum degassing and cleaning of effective photoemissive surface of cathode by electrochemical desorption in hydrogen H atmosphere at pressure of 5 - 10 torr until nuclear-pure surface is obtained. After that mentioned surface is covered with regenerated shielding coating in the form of layer of gold Au, 2 to 5 monolayers thick, by way of thermal evaporation of coating material in vacuum. Then vacuum is relieved and field-effect photocathode is stored in the open.

EFFECT: enhanced corrosion resistance of radiation detector field-effect photocathode.

1 cl, 2 dwg