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New Generation Silicon Solar Cells

2.4 Doping

New Generation Silicon Solar Cells

Donor - doping

add an extra electron

number of e- > number valence e-

n – type dopant

ED right under conduction band EC

Acceptor - doping

add an extra hole

number of e- < number valence e-

p – type dopant

EA right above valence band EV

Doping: Change in carrier concentration change in electrical properties

n-type doping

p-type doping

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