TRASIM - COMPACT AND EFFICIENT 2-DIMENSIONAL TRANSIENT SIMULATOR FOR ARBITRARY PLANAR SEMICONDUCTOR-DEVICES

A new software tool TRASIM (Two-Dimensional Transient Simulator) has b een developed for arbitrary, planar semiconductor devices. A finite di fference technique is employed with a modified, decoupled Gummel-like method. The memory requirements are reduced significantly compared to the conventionally used Newton-like methods. TRASIM exhibits a good st ability and convergence rate, and user interaction with the computatio nal process is significantly reduced. Low memory requirements and effi ciency make the method attractive for the future 3-D applications. The software uses the drift-diffusion model, with up-to-date mobility and lifetime models. External RC-chains may be connected to device electr odes. Numerical examples are presented illustrating the advantages of the modified Gummel method over the Newton method, for transient simul ation.