In Si the electron and hole drift mobilities at room temperature are 1400 and 450 cm2 V--. Assume that the intrinsic concentration of carriers is 1æ1010cm-3 determine the electrical conductivity. Assuming that Si density is 2.33 g/cm³, is 0.01 atomic percent of atoms are replaced with Phosphorus, and 90% of the phosphorus dopant are excited to the conduction band, calculate the resistivity of the doped semiconductor.

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Problem 5
In Si the electron and hole drift mobilities at room temperature are 1400 and 450 cm? V-1 S-1.
Assume that the intrinsic concentration of carriers is 1x1010cm-3 determine the electrical
conductivity. Assuming that Si density is 2.33 g/cm³, is 0.01 atomic percent of atoms are
replaced with Phosphorus, and 90% of the phosphorus dopant are excited to the conduction
band, calculate the resistivity of the doped semiconductor.
Transcribed Image Text:Problem 5 In Si the electron and hole drift mobilities at room temperature are 1400 and 450 cm? V-1 S-1. Assume that the intrinsic concentration of carriers is 1x1010cm-3 determine the electrical conductivity. Assuming that Si density is 2.33 g/cm³, is 0.01 atomic percent of atoms are replaced with Phosphorus, and 90% of the phosphorus dopant are excited to the conduction band, calculate the resistivity of the doped semiconductor.
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