The work done during the first reporting period of PeroCUBE has focused primarily on the development of new materials, processes, and device architectures to produce PePV and PeLED devices. These experimental efforts have been supported by advanced atomistic simulations based on density functional theory to understand and optimize the interfaces of the device stack. More specifically, 2D/3D heterostructures combining perovskite semiconductors with organic cations of different sizes have been investigated theoretically and then implemented experimentally. With this approach, small-scale red, green and blue PeLEDs reaching a performance close to the state-of-the-art were demonstrated. The rationale behind this choice of 2D/3D heterostructures is not only to improve performance, but also to extend stability, a critical point for PeLEDs. Indeed, while exhibiting an external quantum efficiency beyond the state-of-the-art, red PeLEDs made within PeroCUBE with a different approach - nanocrystals instead of an heterostructure - had a lifetime on the order of 1 h, a value on the lower limit to start investigating the new OLAE products envisioned within PeroCUBE. In addition to 2D/3D heterostructures, ionic liquids have also been employed to increase stability, notably in small-scale PePV devices. In parallel, new inks, some embedded in polymers for improved stability, and alternative solvent formulations have been investigated to facilitate upscaling efforts via gravure printing. Some of these research activities have been supported by information provided by a novel metrology tool combining atomic force microscopy and infrared spectroscopy (AFM-IR). This characterization method enables to map the microstructural and optical properties of perovskite materials at high spatial resolution, hence providing valuable insights to guide the optimization of deposition processes and material formulations. A new generation of lasers is also under development to further improve the capabilities of such characterization system. Upscaling activities to produce PePV devices with an active area of 1 cm2 and then 100 cm2 have progressed quickly as some efficiency targets have been achieved ahead of schedule on rigid substrates. Efforts are now ongoing to transfer these results to flexible substrates. To guarantee long-term operational stability, barrier foils are being developed to encapsulate PePV and PeLED devices. First tests for LiFi using perovskite-devices have been performed and these activities will accelerate in the coming months. An existing risk-benefit assessment tool, LICARA nanoScan, that had been developed for assessing nanomaterials has now been modified to a web application (LICARA Innovation Scan) for the assessment of products that use hazardous substances in the product or in its production. It showed that the products being developed in PeroCUBE have low risk and moderate societal benefits. Further improvements during the project can increase their potential to be sustainable over their entire life cycle. Furthermore, an existing scanning tool for the for the emissions of hazardous substances in a product’s life cycle, FutureNanoNeeds Hotspot Scan, is being developed into an online tool in which much of the manual work to collect emission factors to the environment has been automated. To conclude, using the aforementioned tools, the potential human health and environmental impacts of the PeroCUBE technologies has been evaluated and results will be used as a guide to optimize materials and devices to improve sustainability