cesium-antimonide photocathode

cesium-antimonide photocathode

[′sē·zē·əm ′an·tə·mə‚nīd ‚fōd·ō′kath‚ōd] (electronics) A photocathode obtained by exposing a thin layer of antimony to cesium vapor at elevated temperatures; has a maximum sensitivity in the blue and ultraviolet regions of the spectrum.