Renewable energy technologies are needed to replace costly and polluting fossil fuels for energy generation. These technologies must be environmentally, socially, and economically acceptable, and perovskite solar modules have the potential to fulfill all these essential requirements. The VALHALLA project focuses on bringing stable, solvent-free, perovskite solar modules for clean electricity generation in Europe closer to market, working to provide pathways to a European industrial base.

VALHALLA will develop perovskite solar cells and modules with power conversion efficiencies above 26 % (modules > 23 %) and extrapolated operational lifetime > 25 years, following an eco-design approach: employing harmful-solvent-free perovskite deposition, optimized use of materials, circularity, recyclability, scalable and low-cost manufacturing processes, to create a viable economic pathway for the European commercialization of this sustainable technology. The concept of VALHALLA is to bring together the critical expertise spanning all the technological competencies in order to redesign and realise a highly efficient, stable, scalable and cost-effective perovskite PV technology, with sustainability considerations driving all technical advancements.