What is Electron Emission?
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What is Electron Emission?
Electron Emission Definition
Electron emission is the release of electrons from a material’s surface when they gain enough energy to overcome the surface barrier.
Types of Electron Emission
The main types are thermionic emission (heat), field emission (electric field), photoelectric emission (light), and secondary electron emission (high-energy particles).
Work Function
The work function is the minimum energy needed for electrons to escape a material’s surface.
Applications in Devices
Vacuum tubes
Displays
Microscopes
Solar Cells
Cameras
Magnetrons
Vacuum diodes
Photoelectric Emission in Solar Cells
Solar cells use photoelectric emission to convert light into electrical energy.
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