Question 3 - Carrier Transport (a) The below figure represents electron concentration (n) and conductivity (0) versus in

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Question 3 Carrier Transport A The Below Figure Represents Electron Concentration N And Conductivity 0 Versus In 1 (100.02 KiB) Viewed 60 times

Question 3 - Carrier Transport (a) The below figure represents electron concentration (n) and conductivity (0) versus inverse temperature for silicon. Explain the behavior of the conductivity curve in relation to the rest of the figure. T(K) 100 500 1000 300 200 75 10 TO 10 Electron concentration (cm) 105 1.0 Conductivity (0-cm) 104 40.1 1013 0 4 12 16 8 1000 20 (10) ) (b) Why is the Einstein relation useful? (2) (c) A silicon crystal having a cross-sectional area of 0.001 cm² and a length of 10 cm is connected at its ends to a 10-volt battery. At T = 300 K, we want a current of 100 mA in the silicon. Calculate (0) the required resistance R (2) (ii) the required conductivity (3) (ii) the density of the donor atoms to be added to this conductivity (2) (iv) the density of the acceptor atoms to be added to form a compensated p-type material with the conductivity given from part (ii) if the initial concentration of donor atoms is N. = 1015 cm? (3) (d) What is the Hall-effect and how can it be used practically? (3) [25]