depletion region

(redirected from Depletion zone)

depletion region

[də′plē·shən ‚rē·jən]
(electronics)
The portion of the channel in a metal oxide field-effect transistor in which there are no charge carriers.

depletion region

In a transistor, the area where P-type silicon (holes) and N-type silicon (excess electrons) meet. See depletion mode.
References in periodicals archive ?
Biofertilizers help to increase the nutrient absorbing surface area beyond the depletion zone of the root.
At the junction of the channel an embedded electrode neutralizes some of the chloride ions in seawater to create an "ion depletion zone" that increases the local electric field compared with the rest of the channel.
The expansion of depletion zone to the eastern parts of the city highlights contributing role of permeable land to aquifer recharge of the city.
The depletion zone continued to grow deeper but with a different pattern depending on the soil water stress level.
A depletion zone has historically been identified at the nearby Golden Crown reef being non-economic at surface, only reaching commercial grades below 100m vertical depth.
The Yanai model assumes a steady-state depletion zone around roots and is most appropriate for established roots.
As the depletion zone edge moves back towards the P/N junction, it meets the outgoing ionized carrier pulse, which is then collected earlier than in the small-signal case where there is no depletion zone edge modulation.
Two drill holes are planned in the 2011 program to test for sulphides below the interpreted depletion zone.
Some of the known gold lodes also show depletion zones closer to surface.
Microbial roles in global change include producing and consuming atmospheric gases that affect climate; mobilizing toxic elements such as mercury, arsenic, and selenium; and producing toxic algal blooms and creating oxygen depletion zones in lakes, rivers, and coastal environments (eutrophication).
Microbial roles in global change include producing and consuming atmospheric gases that affect climate; mobilizing toxic elements such as mercury, arsenic and selenium; and producing toxic algal blooms and creating oxygen depletion zones in lakes, rivers and coastal environments (eutrophication).
Many of the holes from this programme returned thicker and higher tenor results than intercepted by previous explorers closer to surface, possibly indicating depletion zones in the weathered profile.