Chapter 4, Problem 18P

The intrinsic electrical conductivity a of a semiconductor can be approximated by: $\sigma =e\left(C-\frac{E_g}{2kT}\right)$ where a is measured in (O-m)^-1. E_gis the band gap energy, k is Boltzmann’s constant ( $\text{8}.\text{62}\times \mathrm{<mn>\; 1\; </mn>}{\mathrm{<mn>\; 0\; </mn>}}^{-\mathrm{<mn>\; 5\; </mn>}}$ eV/K), and T is temperature in kelvins. For germanium, C = 13.83 and E_g= 0.67eV. Write a program in a script file that calculates the intrinsic electrical conductivity for germanium for various temperatures. The values of the temperature should be read from an xls spreadsheet using the xlsread command. The output should be presented as a table where the first column is the temperatureand the second column is the intrinsic electrical conductivity. Use the following values for temperature: 400, 435, 475, 500, 520, and 545 K.