Entity: PHOTOELECTRON
A photoelectron is an electron released from an atom, molecule, or solid by the photoelectric effect.
PHOTOELECTRON
Etymology
The term 'photoelectron' is derived from the combination of 'photo-' meaning light and 'electron' referring to a subatomic particle.
Definition
A photoelectron is an electron released from an atom, molecule, or solid by the photoelectric effect. It is emitted when the material absorbs photons of sufficient energy, providing valuable information about the material's electronic structure.
Historical Context
The concept of photoelectrons was first introduced by Albert Einstein in 1905 as part of his explanation of the photoelectric effect, for which he was awarded the Nobel Prize in Physics in 1921.
Cultural Significance
Photoelectrons play a crucial role in various scientific fields, including physics, chemistry, and materials science. They are extensively used in photoelectron spectroscopy techniques to analyze the electronic properties of materials.
Related Concepts
- Photoelectric effect
- Electron spectroscopy
- Quantum mechanics
See Also
A particle that is emitted from a material when it absorbs photons of sufficient energy, carrying information about the material's electronic structure.