Modelling of self-protected light-triggered thyristors

The paper describes the work carried out in modelling the self-protected li ght-triggered thyristor (SPELTT). In particular, a sophisticated quasi-thre e-dimensional model was developed for the structure, which included all the important circuit/device interactions. The model was used to investigate t he sensitivity of critical operation timings to various processing paramete rs for the structure. Excellent agreement was found with experimental measu rements on the device. The predictive capability of the model has led to id entifying approaches which significantly improve the device performance.