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 Oct, 2017, 08:33: PM
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 Gajendra | 4th Dec, 2017, 01:24: PM
- define semiconductors and types of semiconductors
- Formation of depletion layer
- What do you mean by depletion layer and potential barrier for a p-n junction.
- Can we measure the potential difference of a p-n junction by putting a sensitive voltmeter across its terminals?
- Name the different types of currents flowing through a p-n junction diode.
- a) In the depletion region of an unbiased p-n junction diode, what are the charge carriers? b)Which biasing makes the junction resistance low and which high?
- What do you understand by breakdown and breakdown voltage?
- How does an ideal diode behave when forward biased and reverse biased?
- What all techniques need to be used to obtained p-n junction?
- If the forward voltage in a semiconductor diode is changed from 1 to 2.5 V, then the forward current changes by 1.5 mA. What is the resistance of junction diode?
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