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Photocathodes

Photocathodes are specialized materials or surfaces that exhibit the photoelectric effect, wherein the absorption of photons leads to the emission of electrons. When photons with sufficient energy strike a photocathode, they transfer energy to the electrons within the material, enabling them to overcome the surface potential and escape into the surrounding space. This emission of electrons is often referred to as photoemission. Learn more about photocathodes →

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Lebow Co. - Goleta, CA

Luxel Corp. - Friday Harbor, WA

Glossary

photocathodes Photocathodes are specialized materials or surfaces that exhibit the photoelectric effect, wherein the absorption of photons leads to the emission of electrons. When photons with sufficient energy strike a photocathode, they transfer energy to the...
phototube An electron tube having a photocathode for the emission of a photoelectric current.
photoelectric effect The emission of an electron from a surface that occurs when a photon impinges upon the surface and is absorbed. This effect is the means by which photons may be detected.
cathode A cathode is an electrode through which electric current flows out of a polarized electrical device. In different contexts, the specific role and behavior of the cathode can vary, but it generally serves as the site for reduction reactions (gain of...

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