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The built in potential in a pn junction. Due to the difference in carrier concentration between the sides of a pn junction.
Diffusion potential increases with increase in doping levels.
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Why pn junction is neutral?
the material in which using for doping is already neutral.,,so the pn-junction diode also neutral........
What is potential barrier in PN junction?
Whenever two dissimilar conductors touch a "potential barrier" forms. All conductive materials have a voltage above zero that an electron must have to enter the material. In true conductors, this voltage is very low. In semiconductors, it can vary, but is usually in the 0.25 to 6.8 Volt range. In insulators, it can be very, very high. When two semiconductors or a metal and a semiconductor touch the difference is polarity sensitive. The higher the "band gap", the voltage that must be overcome to enter the "conduction band", the higher the voltage drop in the forward bias direction. Think of the "band gap", or potential barrier, as being like a curb on a road and sidewalk. It's easy to ride a bike off the sidewalk over the curb onto the road, but not so easy the other way.
Why use the PN junction diode in rectifier?
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.
How semiconductor diodes operates?
semiconductor diode with out a pn junction.
What is the effect of temperature on barrier voltage in a pn junction diode?
ginago
Why potential across pn junction is called potential barrier?
The potential across a pn junction is called potential barrier because majority charge carriers have to overcome this potential before crossing the junction.
How a pn-junction can be formed?
A pn junction can be formed by bringing the p and n type materials together.
What is Another name for pn junction?
I cannot think of any, but a pn junction is a part of a diode and has a rectifying properties.
Why pn junction is neutral?
the material in which using for doping is already neutral.,,so the pn-junction diode also neutral........
What is the junction resistance of pn junction diode?
The resistance of a forward biased pn junction is zero.
What are the types of biasing in pn junction diode?
There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing
What is potential barrier in PN junction?
Whenever two dissimilar conductors touch a "potential barrier" forms. All conductive materials have a voltage above zero that an electron must have to enter the material. In true conductors, this voltage is very low. In semiconductors, it can vary, but is usually in the 0.25 to 6.8 Volt range. In insulators, it can be very, very high. When two semiconductors or a metal and a semiconductor touch the difference is polarity sensitive. The higher the "band gap", the voltage that must be overcome to enter the "conduction band", the higher the voltage drop in the forward bias direction. Think of the "band gap", or potential barrier, as being like a curb on a road and sidewalk. It's easy to ride a bike off the sidewalk over the curb onto the road, but not so easy the other way.
Why is that a space charge region in a pn junction at equilibrium is often made small?
The space charge region in a pn junction at equilibrium is often made small due to:to obtain a high junction capacitance;since the junction capacitance is inversely proportional to the width of the space charge region, the smaller the width, the larger the junction capacitance.to ensure easy diffusion of charge carriers;if the space charge region is made small, that is, the width is made small, the distance for diffusion also becomes short, then it becomes easy for the electrons to diffuse into the p-side and the holes into the n-side
Is Gunn diode a PN junction?
no....is n't
How many PN junction are there in FET?
One
What happen when voltage across the pn junction increases?
If the potential across the junction is high enough, then it could cause it to conduct. This is with all diodes and is the forward voltage. If it is not high enough, it will just sit there and not conduct.
How does a diode produce light?
When light falls on the junction of a pn junction/diode the potential barrier gets break down due to majorty of electrons flow and they release energy in the form of light.
