Abstract
The Perovskite-Silicon Tandem (PST) is currently one of the most promising PV technologies, especially among the silicon-based tandem cells. It has reached a module efficiency of 26%, which is expected to grow above 30% by 2030, and it can be produced with relatively simple additional processing steps compared to mono-crystalline silicon technologies, while offering much higher efficiency. The major weakness that has limited the Perovskite-based PV cells from entering the market for many years was their low stability in operating conditions. One proposed way to overcome this issue is the paring of a perovskite layer with a C-Si cell in a tandem configuration, in order to take maximum advantages from the high stability of the C-Si cells on one hand, and the high efficiency of the perovskite top absorber on the other hand. . The goal of the present study is the evaluation of the environmental impact of the emerging Perovskite Silicon Tandem PV modules, through the Life Cycle Assessment (LCA) methodology, focusing on the Global Warming Potential (GWP) impact. Both a Comparative LCA and a prospective dynamic LCA were performed, in order to evaluate how the impact on climate change of the PV modules analysed might change in the future, considering future trends that are relevant for the PV market until 2030.