Optical absorption and photoemission in semitransparent and opaque Cs(3)Sb photocathodes.
Optical absorption in the visible region is matched to photoelectric emission of cesium-antimonide photocathodes through the use of thin-film equations to explain the greater absorption (and hence greater sensitivity) of opaque-type photocathodes with the same optical constants and thickness of semitransparent ones. The effect is also the same for other popular photocathodes that are used for optical detection.
Johnson
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