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+// Position of Fermi level at room temperature
+// Basic Electronics
+// By Debashis De
+// First Edition, 2010
+// Dorling Kindersley Pvt. Ltd. India
+// Example 1-22 in page 50
+
+clear; clc; close;
+
+// Data given
+C_Ge=4.41*10^22; // Concentration of Ge atom /cm^3
+N_D=4.41*10^15; // Number of free donor atoms 
+N_C=8.87*10^18; // Number of conduction electrons assuming full ionization
+K_BT=0.026; // Measured in eV at room temperature
+
+// Calculation
+E_F=K_BT*log(N_D/N_C);
+
+printf("Position of fermi level is %0.4f",E_F);
+
+// Result
+// Position of Fermi level from edge of conduction band is -0.1977
+// Thus E_F is below E_C
+\ No newline at end of file