Welcome to electrical and electronics engineering discussion website, Please login or register to continue.


Your answer

Thanks for your contribution. Feel free to answer this question. Please avoid short answer. Your answer is most welcome. Be genuine.

Upload image or document:

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
Are you a robot ? (Y = Yes / N = No)
To avoid this verification in future, please log in or register.

2 Answers

0 votes

It is the junction when the a semiconductor doped with group 13elements is brought in contact with a semiconductor doped with group 15elements.and as the name suggests it is a junction between p type and n type semiconductor.next is the depletion region which is formed when holes and electrons diffuse from p type and n type respectively.and this is due to the tendency of recombination of holes and electrons .so they cross the pn junction (which is formed when the two p type and n type material were brought in contact with each other .At this stage the width of depletion region is zero which is referred to as metallurgical junction).after a certain amount of time the majority carriers can no longer diffuse  as the uncovering of immobile ions takes place(immobile ions means the elements that were used for doping are now uncovered  ) and only the minority carriers diffuse ( uncovering immobile ions   leads to creation of positive ions in the n side and uncovering of negative ions in the p side  as a result electric field is formed which always supports the movement of minority carriers and opposes movement of majority carriers).the above scenario is for zero applied voltage

+1 vote
It is a sandwich of p type and n type semiconductor 

Related questions

1 answer 11 views
1 answer 11 views
1 answer 10 views

Welcome to Q&A site for electrical and electronics engineering discussion for diploma, B.E./B.Tech, M.E./M.Tech, & PhD study.
If you have a new question please ask in English.
If you want to help this community answer these questions.


Most popular tags

power motor dc circuit voltage transformer current used system phase resistance factor load synchronous energy ac induction generator electric series frequency capacitor use speed between electrical meter line type mosfet control transmission difference magnetic plant high single instrument bjt source advantages function diode machine unit winding torque field parallel amplifier define supply thyristor motors arduino shunt maximum relay armature problem electricity time and value on transformers types coil diagram state flow ratio material three starting direction theorem method emf formula operating efficiency digital wave microprocessor test instruments loss measure operation connected low applications effect single-phase working losses different network law wattmeter inductance temperature measuring constant signal controlled breaker device full compare flux drive wire resistivity logic rc materials machines angle force switch disadvantages converter transistor gain protection scr core measurement number free bridge principle generators reactance circuits negative friction open pole conductor conservation steam iron loop resistors hysteresis short computer using lines secondary station battery rectifier inverter linear induced relays nuclear regulation design analog work rotor electronics gate forces diesel damping rlc connection factors capacitance capacitors minimum insulation basic moving running self systems air fault range direct main stability quality starter igbt eddy ideal ammeter rl 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors rotation characteristics feedback impedance measured electronic inductive start alternator off back curve over solar average three-phase tariff locomotive peak bias zener commutator surge rating universal potentiometer density permanent mechanical copper transducer capacity electrons memory adc excitation transfer explain fuse pure harmonics application of inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate distribution methods delta star oscillator reluctance semiconductor simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units neutral rated engineering conductors coefficient filter controller usually reverse