Basic ELECTRONICS
(2+1)ENGR MUHAMMAD SHAKEEL AKRAM
ELECTRONICS ENGINEERING FICT, BUITEMS.
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CHAPTER 1
INTRODUCTION TO
SEMICONDUCTORS
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COMPARISSON OF Si and C
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Silicon and Germanium
• Germanium is unstable at high temperature
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Covalent bond of Si and Ge
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ENERGY BANDS
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Current in Semiconductor
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Electrons And Hole Conduction
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Electrons And Hole Conduction
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Electrons And Hole Conduction
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Intrinsic and Extrinsic semiconductors
Intrinsic
• Silicon and Germanium in its neutral form
Extrinsic
• Adding impurities using doping in silicon • Makes it either N-type or P- type
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Intrinsic and Extrinsic semiconductors
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Intrinsic and Extrinsic semiconductors
N- type • Electrons in majority carriers• Holes in minority carriers
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Intrinsic and Extrinsic semiconductors
P- type • Electrons in minority carriers• Holes in majority carriers
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Diode
• PN junction is formed between N-type and P-type portion
• Diode conduct in only one Direction.
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Diode
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Diode
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Diode
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Diode
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Diode
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Diode
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Diode
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