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1. Can u explain how barrier potential is opposite to the applied voltage in forward bias an why applied voltage decreases in depletion region.

Asked by Prakash 19th October 2017, 8:33 PM
Answered by Expert
Barrier potential is opposite to the applied voltage because the majority carriers
 are pushed to the opposite sides at PN- junction.
However, the direction of the potential is taken from positive to negative.
At the boundary of the barrier, ions are formed negative on p-side and
positive on n-side which is in opposite direction to the applied voltage.
Applied voltages decrease the depletion region
width by making majority carrier to overcome the barrier.
Answered by Expert 4th December 2017, 1:24 PM
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