Some important questions from the chapter Semiconductors. Please experts need help.

Dear Student,
 
Why a contact difference of potential exist in PN junction?
What is Reverse saturation current?
What is reverse bias in a PN junction?
What is meant by biasing a PN junction?

  What is barrier potential?
 What is depletion region in PN junction?
 What is depletion region in PN junction?Give some application of Hall Effect.
Give the energy band structure of P- type semiconductor.
Define drift current?
Why P  type or trivalent impurities are called as acceptor impurity?


Regards

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