| 摘要 |
An electric field distribution is calculated by means of a drift diffusion model, and a one-dimensional electric field distribution is taken out from a result of the calculation, and this electric field distribution which was taken out is provided to a one-dimensional Monte Carlo device simulation to calculate a distribution of impact ionization coefficients, and G<n>(x) is calculated by using an equation 1 to an equation 5 which are described belowand as a result of this calculation, it is determined that a breakdown does not occur in case that, as n becomes to be large, G<n>(x) converges to a constant value, and final electric current density is calculated, and it is determined that a breakdown occurs in case that G<n>(x) becomes to be large as n increases.
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