|1.||the ejection of electrons from a solid by an incident beam of sufficiently energetic electromagnetic radiation|
|2.||any phenomenon involving electricity and electromagnetic radiation, such as photoemission|
The emission of electrons from a material, such as a metal, as a result of being struck by photons. Some substances, such as selenium, are particularly susceptible to this effect. The photoelectric effect is used in photoelectric and solar cells to create an electric potential. Also called photoemission.