PN-JUNCTION-DIODE Notes | EduRev

: PN-JUNCTION-DIODE Notes | EduRev

 Page 1


PN JUNCTION DIODE 
Page 2


PN JUNCTION DIODE 
    P type and N type semiconductors, taken 
separately are of very limited use. 
 
  If we join a piece of P type material to a piece 
of N type material such that the crystal 
structure remains continuous at the 
boundary,,….. A PN  JUNCTION is formed 
Page 3


PN JUNCTION DIODE 
    P type and N type semiconductors, taken 
separately are of very limited use. 
 
  If we join a piece of P type material to a piece 
of N type material such that the crystal 
structure remains continuous at the 
boundary,,….. A PN  JUNCTION is formed 
? It can function as …. 
 
 
           Rectifier , 
           Amplifier , 
           Switching  
           And other operations in electronic circuits. 
Page 4


PN JUNCTION DIODE 
    P type and N type semiconductors, taken 
separately are of very limited use. 
 
  If we join a piece of P type material to a piece 
of N type material such that the crystal 
structure remains continuous at the 
boundary,,….. A PN  JUNCTION is formed 
? It can function as …. 
 
 
           Rectifier , 
           Amplifier , 
           Switching  
           And other operations in electronic circuits. 
? A PN junction cannot be produced by simply  
pushing two pieces together or by welding 
etc…. Because it gives rise to discontinuities 
across the crystal structure. 
 
? Special fabrication techniques are adopted to 
form a P N junction 
Page 5


PN JUNCTION DIODE 
    P type and N type semiconductors, taken 
separately are of very limited use. 
 
  If we join a piece of P type material to a piece 
of N type material such that the crystal 
structure remains continuous at the 
boundary,,….. A PN  JUNCTION is formed 
? It can function as …. 
 
 
           Rectifier , 
           Amplifier , 
           Switching  
           And other operations in electronic circuits. 
? A PN junction cannot be produced by simply  
pushing two pieces together or by welding 
etc…. Because it gives rise to discontinuities 
across the crystal structure. 
 
? Special fabrication techniques are adopted to 
form a P N junction 
What is a PN Junction? 
   
A PN junction is a device formed by 
joining  p-type ( doped with B, Al) 
with n-type (doped with P, As, Sb) 
semiconductors  and separated by a thin 
junction is called PN Junction diode  or  
junction diode. 
 
 
 
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