Three-Dimensional Device Simulator CADDETH with Highly Convergent Matrix Solution Algorithms

A practical three-dimensional device simulator CADDETH (Computer Aided Device DEsign in THree dimensions) has been developed. Matrix solution methods appropriate to three-dimensional analyses have been devised. A vectorization ratio of 97 percent has been attained through efficient use of S-810 super computer with vectorized coding, resulting in a computation speed 16 times greater than can be obtained with S-810 in scalar mode computation. Full avalanche breakdown of MOSFET's can be readily simulated with good convergence and good agreement with experimental results.