Parallel-connected calchopyrite-silicon based tandem cell - PARACELSis

Project summary

The PARACELSis project addresses the need for advancing high-efficiency Si-based tandem photovoltaic devices, while exploring alternative architectures with better tolerance to mismatching and reduced degradation risk, particularly in chemically unstable materials like perovskites. The main goal is to demonstrate the feasibility of a novel 3-terminal (3T) tandem photovoltaic device using stable materials, such as chalcopyrite and crystalline silicon, in a monolithically integrated, parallel configuration. The 3T solar cells will be assembled into practical 2T modules, compatible with conventional module interconnection systems used in commercial applications. Expected benefits include improved device stability, simplified architecture, reduced sensitivity to solar spectrum variations, and advancements from TRL 2 to 4-5.