What is the difference between intrinsic and extrinsic semiconductors in Class 12 Physics Chapter 14 Semiconductor Electronics?
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1 Answer
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According to the NCERT Solutions for Class 12 Physics Chapter 14 Semiconductor Electronics, intrinsic semiconductors are pure forms of semiconductor materials with no impurities like germanium or silicon. At room temperature, their conductivity is very low because they are solely based on thermally generated charge carriers (electrons and holes). On the other hand, extrinsic semiconductors to increase the conductivity, they are doped with impurities. P-type are doped with trivalent atoms (extra holes) and N-type semiconductors are doped with pentavalent atoms (extra electrons).
Doping makes extrinsic semiconductors far more conductive b...more
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