3. At 300 K a very pure sample of Ge has an electric resistivity of 3.9 1.m. The mobility of electrons and holes in the

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3 At 300 K A Very Pure Sample Of Ge Has An Electric Resistivity Of 3 9 1 M The Mobility Of Electrons And Holes In The 1 (31.11 KiB) Viewed 26 times

3. At 300 K a very pure sample of Ge has an electric resistivity of 3.9 1.m. The mobility of electrons and holes in the sample are 0.38 m²/Vs and 0.18 m2/Vs, respectively. (a) Calculate the intrinsic carrier density and band gap of Ge (at room temperature), given mm/m? = 0.0155. (b) The sample is then doped with 1022 m3 boron. What are the concentration of electrons and holes, and what is the new resistivity of the sample? (c) Where is the chemical potential of the doped sample? =