A Cs3Sb photocathode was deposited on a flat metal surface using a nonvacuum processing technique and in-situ panel devices were fabricated. The technique does not require ultrahigh vacuum conditions as in conventional techniques. The electrical characteristics of the panel devices were investigated by measuring the anode current as functions of devices operation times. Blue light with a 450 nm wavelength was used as an excitation source. The result shows that the Cs3Sb photocathode emitter has the potential of a long lifetime with stable electron emission characteristics in the panel making it a suitable cathode material for panel devices.
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American Vacuum Society
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