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work function

Syllabification: work func·tion

Definition of work function in English:

noun

Physics
The minimum quantity of energy that is required to remove an electron to infinity from the surface of a given solid, usually a metal. (Symbol: φ)
Example sentences
  • The energy required to remove an electron from the metal is called the work function, which is written as hv (Planck's constant multiplied by the required frequency of light).
  • When we heard that a filament of platinum - which, like tungsten, is a metal with a high work function - tended to show less positive-ion noise, Sheldon obtained a sample.
  • The high current density is possible because the p-doped WBG region acts as a negative electron affinity material when in contact with low work function metals.

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