Physics Notes Class 12 Chapter 14 Semiconductor ...

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are the number density of electrons and holes and n i is number density of intrinsic carriers, i.e., electrons or holes. In n-type semiconductor, n e > > n h In p -type semiconductor, n h > > n e Electrical conductivity of extrinsic semiconductor is given by σ = 1 / ρ = e (n e μ e + n h μ h) where ρ is resistivity, μ e and μ h

  Electron, Hole, Electrons and holes