Current injected damp heat (CDH) test have been reported to accelerate certain type of long-term degradation observed in at least one prototype flexible thin film silicon photovoltaic (PV) modules deployed in field . This report have raised a question that whether conventional DH tests should be combined with current injection or light illumination to better reproduce long-time degradations of flexible thin film modules. To answer this question, we have been testing multiple flexible products available in the market, as part of the activities of Japanese Task Group 8 of the International PV Quality Assurance Task Force (PVQAT) . Here, we present some results of our damp (or dry) heat testing with light illumination on a flexible CIGS module product with relatively poor moisture barriers.
Current injection during damp heat (DH) test have been reported to accelerate certain type of long-term degradation observed in of photovoltaic (PV) modules deployed in field. In this paper, we present the current status of our damp heat testing with current injection or light irradiation on flexible PV modules, with some preliminary results.