photoemission

Radiation releases electrons

Photoemission is the ejection of electrons from a material when light strikes its surface.

The phenomenon occurs because photons transfer energy to electrons, releasing them if the energy exceeds a threshold.

Photoemission underlies solar cells, light sensors, and photoelectric devices.

Einstein's explanation of the photoelectric effect, which describes photoemission, earned him the Nobel Prize.

mechanism

photoelectron

Light-expelled negative particle

materials

semiconductor

Partial electrical conductor

  • cesiumAlkali metal, number fifty-five
  • crystalOrdered-atom solid
  • NEACultural grant agency

substrate · oxidation · activation

spectroscopy

XPS

Document format or laptop line

applications

photodetector

Light-to-electricity conversion device

physics

momentum

Product of mass, velocity

Opposites
mechanism of electron emission

photoemissionsecondary emission

Particles released by impact

direction of photon-electron interaction

photoemissionelectroluminescence

Light emission from current

light absorption

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photo, photograph, emission, photography, emissary, photographs, photographic, photographing, photon

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