Question
Distinguish between an intrinsic semiconductor and P-type semiconductor. Give reason, why, a P-type semiconductor crystal is electrically neutral, although$\text{n}_{h}>>\text{n}_{e}$.
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Answer
- Intrinsic semiconductor does not contain any impurity while p-type semiconductor is doped with a trivalent impurity.
For an intrinsic semiconductor, $\text{n}_{e} = \text{n}_{h}$ while for a p-type semiconductor $\text{n}_{h}>>\text{n}_{e}$
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or any other difference.Alternate Answer
Shows the distinction by band diagram.
(HOTS)
- p-type semiconductor is made by doping the neutral intrinsic semicondustor with trivalent impurity atoms.
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