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Electrical Engineering

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Electrical Engineering

State any two trivalent and pentavalent impurities each.

by EE-Expert in Basic Electronics asked 3 months ago

State any two trivalent and pentavalent impurities each.

1 Answer

by EE-Expert answered 3 months ago

Trivalent Impurities (Group 13 elements)

These have 3 valence electrons and create p-type semiconductors.
1. Boron (B)
2. Gallium (Ga)

*(Other examples include Aluminum (Al) and Indium (In).)*

Pentavalent Impurities (Group 15 elements)

These have 5 valence electrons and create n-type semiconductors.
1. Phosphorus (P)
2. Arsenic (As)

*(Another common example is Antimony (Sb).)*

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