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Question
In a pure or intrinsic semiconductor, valence band holes and conduction-band electrons are always ______.
Options
such that number of holes is greater than the number of electrons
in equal numbers
zero
such that number of electrons is greater than the number of holes
MCQ
Fill in the Blanks
Solution
In a pure or intrinsic semiconductor, valence band holes and conduction-band electrons are always in equal numbers.
Explanation:
An intrinsic semiconductor, also known as an undoped semiconductor, is a semiconductor that is completely free of dopant species. The number of excited electrons and holes in intrinsic semiconductors is equal, ne = nh.
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Intrinsic Semiconductor
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