SEMITRANSPARENT PHOTOCATHODE Russian patent published in 2020 - IPC H01J1/34 H01J40/06 

FIELD: instrument engineering.

SUBSTANCE: invention relates to photoelectronic devices and can be used for making semitransparent photocathodes for high-speed photoelectronic multipliers, electro-optical converters with photocathode closure function, operating in pulsed mode in visible and / or in near ultraviolet, and / or near infrared regions of optical radiation spectrum. Semitransparent photocathode has a transparent substrate and transparent conducting and photoemission layers arranged in series on the substrate. Photoemission layer contains antimony and at least one alkali metal. Transparent conducting layer is made in vacuum conditions by depositing a layer of particles on the transparent substrate, which are sprayed from the mass of graphite-containing material by an electron-beam method, and subsequent thermal annealing of the layer deposited on the transparent substrate.

EFFECT: high uniformity of sensitivity of the semitransparent photocathode at different sections of its working area, simplified production of the semitransparent photocathode.

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