A slab of p-type or n-type semiconductor, howsoever flat, will have roughness much larger than the interatomic crystal spacing. Hence, on joining p – and n-type slabs continuous contact at the atomic level is not possible and the two will ...
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A thin layer on both sides of the p – n junction which is devoid of free electrons and holes and contains mostly immobile ions is called depletion region. Class 12 Physics Chapter 14 Semiconductor Electronics Session 2024-2025.
In a n-type semiconductor dopant is pentavalent and electrons are majority charge carriers. However, a trivalent material is used as a dopant to obtain p-type semiconductor and holes are the majority charge carriers. Class 12 Physics Chapter 14 Semiconductor Electronics ...
Extrinsic semiconductor is a pure semiconductor doped with controlled quantity of either a trivalent or a pentavalent impurity. Class 12 Physics Chapter 14 Semiconductor Electronics Session 2024-2025.
The process of adding either pentavalent or trivalent impurity in a controlled and small quantity in a pure semiconducting material is called doping. Class 12 Physics Chapter 14 Semiconductor Electronics Session 2024-2025.