Question
Download Solution PDFThe majority charge carriers in n-type semiconductors are
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Extrinsic conductors are those which have added impurities in them, like p-type and n-type semiconductors.
- The n-type conductors have electrons as major charge carriers.
- This is because n-type conductors have pentavalent (5 valence electrons) impurities like phosphorous, etc.
- Elements of Group 5 have five valence electrons, i.e. 1 extra from the Group 4 elements. 4 out of 5 electrons get bonded with the neighbouring Silicon atoms and 1 electron per atom remains extra with the Group 5 elements.
- Thus, electrons are the major charge carriers in n-type semiconductors.
- p-type semiconductors have impurities of elements from Group 3 and holes are majority charge carriers in them.
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