First time calculation of the depletion region width and barrier   capacitance of practical diffused semiconductor junctions
  Based on semiconductor materials fundamental equations, the calculation of the depletion region width and barrier capacitance of practical diffused -Gaussian profile- semiconductor junctions was achieved for the first time in this work. The obtained formulas are valid for p-n junctions, Schottky junctions, hetero-junctions and other types of semiconductor junctions. 
Miron J. Cristea