Question

In a pure silicon (11
; = 10^16) crystal at 300 K, 1021 atoms of phosphorus are added per cubic meter. The new hole concentration will be :-​

Answer 1

Answer ⤵️

Given:-

Temperature = 300K

n

i

=10

16

/m

3

Atoms of phosphorous = 10

21

atoms

By using mass action law n

i

2

=n

e

n

h

⇒n

h

=

n

e

n

i

2

=

10

11

(10

16

)

2

=10

11

perm

3