What is an abrupt pn junction?
An abrupt junction is by definition a junction in which the doping type changes over a very small distance compared to the spatial extent of the depletion region (see below.) Figure EC1 : Donor and acceptor density profiles in an abrupt PN junction.
What is abrupt diode?
Abrupt varactor diodes As the abruptness of the junction is governed by the doping concentration and also the profile, this is controlled during the manufacture. For an abrupt varactor diode the doping concentration is held constant, i.e constant doping level as far as reasonably possible.
What is an abrupt and linearly graded pn junction?
(2.139): Comparing the breakdown equation in the linearly graded p-n junction to that of the abrupt p+-n junction, the linearly graded junction has a higher breakdown voltage than that of the abrupt junction for the same range of doping levels.
What is a one sided abrupt pn junction?
Abrupt p-n junction: the doped regions are uniformly doped sp that the transition between the two regions is abrupt. One-sided abrupt p-n junction: one side of the p-n junctions in is distinctly higher- doped than the other in which case only the low-doped region needs to be considered.
What is the correct meaning of the word abrupt?
sudden and unexpected
Definition of abrupt 1a : characterized by or involving action or change without preparation or warning : sudden and unexpected came to an abrupt stop an abrupt turn an abrupt decision to retire. b : rudely or unceremoniously curt She has an abrupt manner.
What is abrupt silicon?
An abrupt silicon p-n junction consists of a p-type region containing 1016 cm-3 acceptors and an n-type region containing also 1016 cm-3 acceptors in addition to 1017 cm-3 donors. Calculate the thermal equilibrium density of electrons and holes in the p-type region as well as both densities in the n-type region.
What is a linearly graded junction?
[′lin·ē·ər·lē ¦grād·əd ′jəŋk·shən] (electronics) A pn junction in which the impurity concentration does not change abruptly from donors to acceptors, but varies smoothly across the junction, and is a linear function of position.
Why do we use pn junction?
A p-n junction diode allows electric current when it is forward biased and blocks electric current when it is reverse biased. This action of p-n junction diode enables us to use it as a rectifier.
What is an example of abrupt?
Abrupt is when someone is short or curt in their manner or actions. An example of abrupt is a teacher who always cuts her students off in conversation without ever stopping to listen. Abrupt means the edge of something appears to break off suddenly or steeply.
What type of word is abrupt?
Abrupt can be a verb, a noun or an adjective – Word Type.
What is step junction?
In a step graded PN junction diode, the concentration of dopants both, in the N side and the P side are uniform up to the junction. But in a linearly graded junction, the doping concentration varies almost linearly with the distance from the junction.
What devices use pn junction?
Junctions between p-type and n-type semiconductors are used to make solar cells, photodiodes, light-emitting diodes, and laser diodes.
Why we use PN junction diode?
What is mean by abrupt?
Definition of abrupt 1a : characterized by or involving action or change without preparation or warning : sudden and unexpected came to an abrupt stop an abrupt turn an abrupt decision to retire. b : rudely or unceremoniously curt She has an abrupt manner. an abrupt reply.