Modelling of self-protected light-triggered thyristors

The paper describes the work carried out in modelling the self-protected light-triggered thyristor (SPELTT). In particular, a sophisticated quasi-three-dimensional model was developed for the structure, which included all the important circuit device interactions. The model was used to investigate the sensitivity of critical operation timings to various processing parameters for the structure. Excellent agreement was found with experimental measurements on the device. The predictive capability of the model has led to identifying approaches which significantly improve the device performance