Temperature dependency and coefficients of LID regeneration for outdoor performance forecasting

Despite all the research carried out to date, LID is not yet fully understood as it has many origins that affect differently several types of crystalline solar cells. Latest available high-tech equipment allows to test modules under a wide range of elevated temperatures while simultaneously light-soaking them with Class AAA light and doing in-situ measurements, for a prolonged time of weeks or months. Employing this setup, the timelines of LID degradation and regeneration under different temperatures and light intensities can be assessed in detail. The present abstract performs this analysis on mono-crystalline silicon (mono-Si) p-type PERC PV modules at elevated temperatures and quantifies the losses due to degradation, which becomes 0.8 to 1.0 % in maximum 12 hours at 92°C under 1000 W/m2, followed by a regeneration of 1 % which can take between 24 and 60 hours. The complete work based on this abstract extends the research to micro-crystalline Silicon (mc-Si) PERC PV modules as well as perform the analysis at different temperatures and light intensities, while relating the output to outdoor long-term exposure data for different locations.