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The position of the Fermi level for a silicon sample is at E f = Ei + 0.45 eV ...

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The

position of the Fermi level for a silicon sample is at E

f

= Ei +

0.45 eV at 300 K. The sample is uniformly illuminated, thereby generating an

additional 10

13 electron-hole pairs per cm3

per second.

The minority carrier lifetime in this sample is 1 μs. Assume n

i

for

Si is 10

10 /cm3

and kT = 26 meV at 300 K. For this

illuminated sample,

at

300 K the position of electron quasi Fermi level (in eV) is at E

Fn

=

Ei +

at

300 K the position of hole quasi Fermi level (in eV) is at E

Fp

= Ei

+

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