photocathode

Noun

Meaning

a cathode that emits electrons when illuminated

Synonyms

Antonyms

Hypernyms

Examples

An image intensifier inherently includes a shutter functionality: If the control voltage between the photocathode and the MCP is reversed, the emitted photoelectrons are not accelerated towards the MCP but return to the photocathode. Source: Internet

The process of reversing the control voltage at the photocathode is called gating and therefore ICCDs are also called gateable CCD cameras. Source: Internet

This is known as the electron affinity of the photocathode and is another barrier to photoemission other than the forbidden band, explained by the band gap model. Source: Internet

The photons which are coming from the light source fall onto the photocathode, thereby generating photoelectrons. Source: Internet

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