There are 2 type of biasing in PN junction didoe
Forward biasing
Reverse biasing
another name for diode is "pn" junction.
I cannot think of any, but a pn junction is a part of a diode and has a rectifying properties.
The resistance of a forward biased pn junction is zero.
What is the cause of reverse recovery time in a pn junction diode
there is difference between doping levels.In normal PN junction diode we add 1 impurity for 108 atoms where as in tunnel diode we add 1 impurity for 103 atoms.there is a probability that electrons may penetrate through barrier.So will not disappear in tunnel diode we get maximum current before barrier disappear where as we get maximum current after break down(there is no barrier) this effect lies within a certain voltage limit of 0.4V. When we consider the energy band structure in case of PN junction diode the fermi level lies inside the forbidden energy gap.In case of tunnel diode,the fermi level lies outside the forbidden energy band. In tunnel diode, there is a topic about negative resistance region where as we cannot discuss it in PN junction diode. ur friend, uma.
n-p-n and p-n-p junction diodes
diode is unipolar
another name for diode is "pn" junction.
no....is n't
zener diode
This is a characteristics of semiconductor diode {pn junction}.In forward biasing here we connect p to positive terminal and n -ve terminal when external voltage is aplied in such a direction that cancels out potential barrier thus permitting current flow In reverse biasing the connection of pn junction is inverted but in this the potential barrier incresesand offers resistance to current flow but at a certain voltage current increases suddenly(the break down voltage)the zener diode works in this principle
I cannot think of any, but a pn junction is a part of a diode and has a rectifying properties.
When the pn junction is forward biased, some of the space charge is neutralized reducing the width of the pn junction.
the material in which using for doping is already neutral.,,so the pn-junction diode also neutral........
We use pn junction diode in rfctification as a rectifier becase it allows current to flow in one direction only, i.e. in forward biase only , and stop current to flow in reverse baised. thats why we use pn junction diode in rectification.
semiconductor diode with out a pn junction.
The resistance of a forward biased pn junction is zero.