1 phosphorous donor atoms at a concentration of 1016 cm 3 are distribu
1. Phosphorous donor atoms at a concentration of 10^16 cm^-3 are distributed uniformly throughout a Si sample, The material is 1 um long and area 0.1 um^2 . The electron mobility is 1250 cm^2/Vs. a. Compute the resistivity and resistance of this sample at room temperature. Use cm in your calculations and units for final answer. [10 points] b. Is this a P type or N type semiconductor? Justify. How does the resistance R change with temperature? [2+2 points]
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