1. Introduction to P-N diode
National Taiwan University
Introduction to P-N diode
Outline
Semiconductor
intrinsic
p-type, n-type (extrinsic)
P-N diode
depletion region
I-V characteristic of diode

2. Energy band structure of different matters
National Taiwan University
semiconductor
Energy band structure of different matters
energy band structure : metal, semiconductor, insulation
An intrinsic semiconductor, also called an undoped semiconductor, is a pure semiconductor without any significant dopant species present.
doping (extrinsic semiconductor ) : p-type, n-type Eg
conductive band
valence band
energy gap
metal
Semiconductor
Eg ~ 1~3 eV
insulation
doping
P-type (IIIA) (acceptor)
N-type (VA) (donor)

3. P-N diode depletion region is due to P-N junction
National Taiwan University
P-N diode
depletion region is due to P-N junction
forward bias : smaller depletion region
reverse bias : larger depletion region
use the reverse voltage 500V for ES

4. National Taiwan University
backups

5. P-N diode

6. National Taiwan University
semiconductor
An intrinsic semiconductor, also called an undoped semiconductor or i-type semiconductor, is a pure semiconductor without any significant dopant species present.
An extrinsic semiconductor is a semiconductor that has been doped.