The depletion region is associated with the formation of a PN junction through doping. When P-type and N-type semiconductor regions are formed and joined, majority carriers diffuse across the junction and recombine. This leaves behind immobile ionized donor and acceptor atoms, creating a carrier-depleted region and an internal electric field. Thus, doping is essential to forming the PN junction and its depletion region.
The depletion region in a PN semiconductor is due to ______.
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This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.