Effects of load connection in accelerated aging of a-Si:H solar cell for long term reliability test

To establish reliable model for long term reliability of a-Si:H PV module, outdoor field aging results and indoor light soaking test has been investigated. For the appropriate comparisons, one type of outdoor system modules and test cells has been fabricated from the same commercial module production line. Severe early stage degradation in outdoor site has been resulted and compared to the indoor aging results. Detailed experiment of indoor aging tests depends on both load condition and cell temperature has been investigated.