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Photocathode

 Home Physics Subfields of physics Applied and interdisciplinary physics Physical chemistry Electrochemistry
 0 By others on same topic  0 Discussions  1970-01-01  See my version
A photocathode is a type of material that emits electrons when it absorbs light, a process known as the photoelectric effect. It typically consists of a semiconductor or a metal that is sensitive to particular wavelengths of light. When photons strike the surface of the photocathode, they can impart enough energy to the electrons within the material to overcome the work function (the minimum energy needed for an electron to escape from the surface).

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