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A pure semiconductor has equal electron and hole concentration of 1016m-3. Doping by Indium increases nh to 4.5×1022m-3. What is nein the doped semiconductor?

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a

106m-3

b

1022m-3

c

10224.5×1022m-3

d

4.5×1022m-3

answer is C.

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Detailed Solution

nenh=n2 or ne=n2nh=1016×10164.5×1022 =10324.5×1022m-3

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A pure semiconductor has equal electron and hole concentration of 1016m-3. Doping by Indium increases nh to 4.5×1022m-3. What is nein the doped semiconductor?