A functional region in which the net charge density is significantly different from zero. (Ref. ANSI/IEEE Std 100.)
NOTE 1 The net charge is caused by electrons, holes, and ionized acceptors and donors.
NOTE 2 The space-charge regions of a semiconductor device include accumulation (enhancement), depletion, and inversion layers.
(2) (of a p‑n junction): A space-charge region contained between two neutral regions of types p and n.
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