CURRENT-INDUCED DEGRADATION METHOD FOR STABILIZATION OF A-SI SOLAR-CELL

Light-induced degradation and light-induced degradation after current- induced degradation of several types of a-Si solar cells were compared in order to investigate the difference between current-induced degrad ation and light-induced degradation. Very little difference in the eff iciency after long-term light irradiation is observed between samples which were degraded by light- after current-induced degradation and th ose which were degraded by light only. Little difference in the collec tion efficiency spectra and the depth profiles of the DICE (dynamic in ner collection efficiency) is also observed between the cells degraded by these two processes. The possibility of applying the current-induc ed degradation method to the stabilization of a-Si solar modules is in dicated.