Unleashing the Full Power of Perovskite/Silicon Tandem Modules with Solar Trackers

Perovskite/silicon tandem photovoltaics is a promising technology to exceed the performance limit of single-junction solarcells. For utility-scale photovoltaic plants, trends and forecasts indicatethat bifacial modules mounted on solar trackers will increasinglydominate the market in the next 20 years. In line with this roadmap, weinvestigate the outdoor performance of perovskite/silicon tandem solarcells mounted on a horizontal single-axis solar tracker in anenvironment with elevated solar insolation and albedo. Weexperimentally demonstrate in such conditions that a bifacialmonolithic tandem solar cell installed on a tracker can generate 55%more power than an equivalent tandem mounted on afixed rack. Onthe basis of our results, we anticipate a significant economic advantageby coupling bifacial monolithic perovskite/silicon tandem technology with solar trackers.