Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsMiscellaneousEasy2 minPYQ_2020
PhysicsEasysingle choice

A crystal of intrinsic silicon at room temperature has a carrier concentration of1.6×1016 m-3. If the donor concentration level is4.8×1020 m-3, then the concentration of holes in the semiconductor is

Options:

Answer:
D
Solution:

Given,

n1=1.6×1016 m-3

ne=4.8×1020 m-3

nh= ?

The concentration of holes in the semiconductor is given by the expression,

n12=ne×nh

1.6×10162=4.8×1020×nh

nh=2.56×10324.8×1020=5.3×1011 m-3

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:SemiconductorsSubtopic:Miscellaneous
⏱ 2mℹ️ Source: PYQ_2020

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