Unit 1 semiconductors and resistors

Electronic Fundamentals

conductors

conduct electricity easily

conductors have

1-3 valence electrons

semiconductors have

4 valence electrons

conductor examples

silver gold copper aluminum

insulators

do not conduct electricity easily

insulators have

8 valence electrons

doping

process used to add impurities to an intrinsic semiconductor material

N-type material

contain impurities with 5 valence electrons

P-type material

contain impurities with 3 valence electrons

Lattice structure

atoms of pure semiconductor material combine the 4 valence electrons of each atom bond to form a crystal structure

doping involves

vaporizing certain elements in a high temperature oven with disks of intrinsic semiconductor material

PN junction

Transistor