Analysis of avalanche breakdown in PN structures

The influence of several impact ionization parameters is studied. Reverse breakdown characteristics for different step junction PN structures are calculated. A correspondence of calculated results with standard results found in the literature is reasonable for low and very high doping concentrations, while poor for the 5*10/sup 10/+5*10/sup 19/ cm/sup -3/ region. For this region, corrected values of critical fields leading to proper breakdown voltages are determined and reported.<>