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What will happen if PN regions are heavily doped in zener diode?
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When diode is heavily doped?
base
Why breakdown voltage increase in reverse biased p-n junction diode?
when the p-n junction is heavily doped p-n junction diode has very sharp breakdown voltage.
Why emitter is heavily doped and base is lightly dopped working of p-n-p transistor?
Emitter is heavily doped because to provide charge carriers to Base & Collector region, Base and Collectors are lightly doped because to accept those charge carriers.
Is it possible to make a junction diode by pressing two pieces of n type and p type together?
No, a functioning junction diode cannot be made by placing two oppositely doped pieces of semiconductor in contact with each other. A functioning junction diode can only be created in one piece of semiconductor with oppositely doped regions in it.However if you placed the two oppositely doped pieces of semiconductor in contact with each other and HEATED them until they just began to melt and joined becoming one piece, it is possible to create a functioning junction diode this way. But this is a tricky and not very reliable way to do it, especially if you melt it just a tiny bit too much you will completely mix the two pieces and lose the doping entirely.
How many doped regions in a Bipolar transistor?
3: emitter, base, collectorThere are three regions but to be absolutely picky I think only two of them need be doped.Nope: they MUST be doped NPN or PNP. If any are undoped it will not function as a transistor.
When diode is heavily doped?
base
What is the difference between an ideal zener diode and practical zener diode?
Zener diode is heavily doped pn junction diode.
Why is a gunn diode called a diode?
A Gunn diode, also known as a transferred electron device (TED), is a form of diode used in high-frequency electronics. It is somewhat unusual in that it consists only of N-doped semiconductor material, whereas most diodes consist of both P and N-doped regions. In the Gunn diode, three regions exist: two of them are heavily N-doped on each terminal, with a thin layer of lightly doped material in between. When a voltage is applied to the device, the electrical gradient will be largest across the thin middle layer. Conduction will take place as in any conductive material with current being proportional to the applied voltage. Eventually, at higher field values, the conductive properties of the middle layer will be altered, increasing its resistivity and reducing the gradient across it, preventing further conduction and current actually starts to fall down. In practice, this means a Gunn diode has a region of negative differential resistance.
Why breakdown voltage increase in reverse biased p-n junction diode?
when the p-n junction is heavily doped p-n junction diode has very sharp breakdown voltage.
What is meant by gun diode?
A Gunn diode, also known as a transferred electron device (TED), is a form of diode, a semiconductor electronic component, used in high-frequency electronics. Its internal construction is unlike other diodes in that it consists only of N-doped semiconductor material, whereas most diodes consist of both P and N-doped regions. In the Gunn diode, three regions exist: two of them are heavily N-doped on each terminal, with a thin layer of lightly doped material in between. When a voltage is applied to the device, the electrical gradient will be largest across the thin middle layer. Conduction will take place as in any conductive material with current being proportional to the applied voltage. Eventually, at higher field values, the conductive properties of the middle layer will be altered, increasing its resistivity, preventing further conduction and current starts to fall. This means a Gunn diode has a region of negative differential resistance. Its largest use is in electronic oscillators to generate microwaves, in applications such as radar speed guns and microwave relay transmitters
When a diode is doped with either a pentavalent or a trivalent impurity its resistance will be?
it will increase
Why emitter is heavily doped and base is lightly dopped working of p-n-p transistor?
Emitter is heavily doped because to provide charge carriers to Base & Collector region, Base and Collectors are lightly doped because to accept those charge carriers.
Why tunnel diode are used in negative resistance region?
because that the tunnel diode is a standard pn junction diode in many respect except its highly doped pn junction so it has some characteristics in the negative resistance region another that its a standard diode
Can LED be manufactured by intrinsic semi conductor?
LED is short for Light Emitting Diode. It is a special type of diode that emits light when it is forward biased. Diodes are made using N doped and P doped semiconductors(not intrinsic/pure.) They form a junction that allows the system to act as a diode. So in short, no. However these doped semiconductors were made using pure(intrinsic) semiconductors. Therefore depending on how far you trace back the process the semiconductors were once intrinsic. So depending on how you look at it, yes.
Is it possible to make a junction diode by pressing two pieces of n type and p type together?
No, a functioning junction diode cannot be made by placing two oppositely doped pieces of semiconductor in contact with each other. A functioning junction diode can only be created in one piece of semiconductor with oppositely doped regions in it.However if you placed the two oppositely doped pieces of semiconductor in contact with each other and HEATED them until they just began to melt and joined becoming one piece, it is possible to create a functioning junction diode this way. But this is a tricky and not very reliable way to do it, especially if you melt it just a tiny bit too much you will completely mix the two pieces and lose the doping entirely.
How many doped regions in a Bipolar transistor?
3: emitter, base, collectorThere are three regions but to be absolutely picky I think only two of them need be doped.Nope: they MUST be doped NPN or PNP. If any are undoped it will not function as a transistor.
What is the semiconductor junction diode?
A single crystal of semiconductor material, part doped with N type impurities and part doped with P type impurities, with the N and P types meeting at a single junction. This junction conducts only when forward biased. Such a diode may be an independent discrete component or it may be part of an integrated circuit (in which case the entire integrated circuit is the single crystal).
