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WELCOME TO
PRESENTATION
Presented by :
Name : Pritam chandra shil
ID: 162-15-7882
Sce: B
Topic : P-type and N-type
materials
SEMICONDUCTORS
Semiconductors are materials whose
electrical properties lie between
Conductors and Insulators.
Ex : Silicon(Si) , Germanium(Ge)
 Two-types of semiconductor :
1. intrinsic semiconductor
2. extrinsic semiconductor
P-TYPE SEMICONDUCTOR
 A p-type material is one in which holes are
majority carriers i.e they are positively charged
materials (+++++++)
 Trivalent impurities
si
siB
si
si
Accepter
impurity
creates a
hole
N-TYPE SEMICONDUCTOR
 A p-type material is one in which electrons are
majority charge carriers i.e they are negatively
charged materials (- - - - - - )
 Pentavalent impurities
Sb
Si
Si
Si
Si
Donor impurity
contribute free
electrons
DIODES
Electronics devices created by bringing together a
p-type and n-type region within the same
semiconductors lattice.
Used : Rectifiers , LED etc.
Free
Electrons
Free
Holes
N-type P-type
THANK YOU !!

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EDC ( P-type & N-type )

  • 1. WELCOME TO PRESENTATION Presented by : Name : Pritam chandra shil ID: 162-15-7882 Sce: B Topic : P-type and N-type materials
  • 2. SEMICONDUCTORS Semiconductors are materials whose electrical properties lie between Conductors and Insulators. Ex : Silicon(Si) , Germanium(Ge)  Two-types of semiconductor : 1. intrinsic semiconductor 2. extrinsic semiconductor
  • 3. P-TYPE SEMICONDUCTOR  A p-type material is one in which holes are majority carriers i.e they are positively charged materials (+++++++)  Trivalent impurities si siB si si Accepter impurity creates a hole
  • 4. N-TYPE SEMICONDUCTOR  A p-type material is one in which electrons are majority charge carriers i.e they are negatively charged materials (- - - - - - )  Pentavalent impurities Sb Si Si Si Si Donor impurity contribute free electrons
  • 5. DIODES Electronics devices created by bringing together a p-type and n-type region within the same semiconductors lattice. Used : Rectifiers , LED etc. Free Electrons Free Holes N-type P-type