Monitoring of Moisture Ingress in PV Module Laminates during Accelerated Aging Tests

33rd European Photovoltaic Solar Energy Conference and Exhibition; 1713-1715
Within this work miniature digital temperature sensors were utilized to monitor the moisture ingress in photovoltaic modules during accelerated aging. The investigated modules were developed within the research project PV@Façade, which deals with the integration of PV modules in the building envelope to obtain long-term resistant multi-material composites. Hence, eleven samples, varying in manufacturing procedure, material composition and/or material supplier were analyzed while stored under damp-heat conditions (85°C, 85 % r.H.). As expected, the glass-glass setup with edge sealing performed best in regard to moisture resistance. For the non-glass modules, samples using TPO as encapsulation material showed good results. Nevertheless it was found, that already small differences in the distance of the sensor to the module edge of the different samples strongly influence the outcome of this experiment.