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What causes depletion region across P-N junction?
The presence of mobile and bound charges on either sides of the pn junction causes the depletion layer. A pn junction is formed when a semiconductor is dopped with a pentavalent impurity on one side and a tri-valent impurity on the other side.on one side electrons will be more in number and on the other side holes will be more in number.At the junction the electrons combine with holes and there will be no charge carriers(i.e. electrons and holes) in that region.That region which is free from charge carriers is called depletion region.
How does the depletion region in field effect transistor increases when forward biased?
Because the bulk charge and surface charge interacting with electric field (forward bias) creates the depletion region.
What is deplition region in a semiconductor?
Depletion region: Consider a diode .It is a basic semiconductor.It has two regions .A cathode (Negative-N) and anode(Positiv-P) regions.The N and P when connected together forms a diode.A junction will be created at the intersection of N and p regions .N region has electrons(-ve charge) and P region has holes(+ve charge) .At the junction the electrons from N region and holes from P region will join together .Particular area at the junction will have no charged particles after that.This region is called depletion region. If we give a voltage of 0.7V ,the depletion region will decrease and there will be current flow in the device.That voltage is called thershold voltage.
How do you barrier voltage is developed?
The integration of the electric field across the depletion region is what develops the barrier voltage.
In pn junction the depletion region capacitance increase with reverse bias or decrease?
any capacitance is given by equation C = (epsilon * A/ d) where d is distance between two plates, thus as d reduces C increases. Now, in depletion region as we increase reverse bias, the depletion region width increases. Now consider depletion region as a parallel plate capacitor, with positive charges on n side and negative charges on p side. Thus, as reverse bias increases, d of junction capacitance increases thus capacitance reduces. On other hand, as reverse bias reduces, d of junction capacitance reduces, thus capacitance increases. -Amey Churi
How depletion region?
depletion region formed by either side of p&n junctions mobile charges accumulate in that places.Type your answer here...
Is a depletion region a good conductor?
No, a depletion region is not a good conductor. It is an insulating region formed in a semiconductor material when a voltage is applied, creating a barrier to the flow of current.
Why charge carriers are not present in depletion region of am pn junction?
depletion region is formed only after recombination of holes and electrons..so in depletion region there are only and only immoble positive and nagative ions...hence,there is no charge carrier..
What is significance of depletion region?
Depletion region is the region where current carriers such as electrons and holes are absent.
What will happen to the depletion region when the P-N junction is supplied by forward bias?
depletion region will decrease.
Why Reduction in Depletion region width with increase in doping?
Because Reverse bias constrained the majority carries to repel from both side (P side & N side)hence Depletion layer is formed with a large extant of majority carriers hence the depletion region is wider in reverse bias.
What is depletion how does it formed?
depletion is related to erosion and soil erosion they are pretty much formed the same way hoped this helped :)
What happens in the depletion region in reverse bias?
in forward biasing depletion region width decreases and in reverse biasing it increases .
Why depletion region is small in germanium compared to silicon?
The depletion region is smaller in germanium compared to silicon because germanium has a lower bandgap energy, meaning that charge carriers can easily cross the depletion region and recombine on the other side. This results in a smaller built-in potential and a smaller depletion region in germanium.
Does the atmosphere prevent depletion of the ozone over Antarctica?
The atmosphere does not protect the ozone depletion. It is the region where the ozone depletion occurs.
Where is ozone depletion the highest?
The ozone depletion is highest at the poles. Specially at the Antarctica region.
What is another name for depletion mode transistor?
depletion layer depletion zone juntion region space charge region bipolar transistor field effect transistor variable capacitance diode
