Which one of the following statement is false? [2010]
A
Pure Si doped with trivalent impurities gives a 
‐type semiconductor
‐type semiconductor
B
Majority carriers in a 
‐type semiconductor are holes
‐type semiconductor are holes
C
Minority carriers in a 
‐type semiconductor are electrons
‐type semiconductor are electrons
D
The resistance of intrinsic semiconductor decreases with increase of temperature
Text Solution
Verified by ExpertsThe correct answer is:
B
− − type semiconductors are obtained by adding a small amount of trivalent impurity to a pure sample of semiconductor (Ge).
Majority charge carries: holes
Minority charge carries: electrons
− − type semiconductors are obtained by adding a small amount of pentavalent impurity to a pure sample of semiconductor (Ge).
Majority charge carries are electrons
The resistance of intrinsic semiconductors decreases with increase of temperature.
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