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N
P
Diode type
Semiconductor
ΔW
U1mA
IS
PN junction
Si
1.11eV
0.5-0.7V
4•10-12-2•10-15A
PN junction
Ge
0.67eV
0.1-0.2V
2•10-5-4•10-7A
IR LED
GaAs
1.43eV
1V
~2•10-20A
Green LED
GaP
2.26eV
1.8V
~10-33A
Blue LED
GaN
3.4eV
2.7V
~10-48A
Schottky
Si
1.11eV
0.1-0.4V
2•10-5-2•10-10A
Schottky
GaAs
1.43eV
0.7V
~2•10-15A
Schottky
GaN
3.4eV
1.6V
~2•10-30A
+
−
N