engineering physics MCQ #5209

A semiconductor has a bandgap of 0.7 eV. At what temperature will the intrinsic carrier concentration be 10^16 cm^-3?

engineering physics MCQ #5209

  1. Question 1

    Q1. A semiconductor has a bandgap of 0.7 eV. At what temperature will the intrinsic carrier concentration be 10^16 cm^-3?

    • A) 300 K
    • B) 400 K
    • C) 500 K
    • D) 600 K

    Answer: 500 K

    Explanation: Using ni = √(Nc Nv) exp(-Eg / 2kT), we can find T = Eg / (2k ln(√(Nc Nv) / ni)) = 500 K.