More efficient thin-film photoelectrodes based on semiconductors

The CO₂UPLED project aims to use sunlight as a sustainable energy source to convert water and CO₂ into solar fuels through photoelectrochemical processes. Solar fuels, such as hydrogen, are a storable and transportable form of renewable energy. They make it possible to overcome seasonal fluctuations and regional differences in solar radiation and thus ensure a reliable, all-year energy supply. The project is thus responding to the growing demand for alternative, clean energy sources that are not only low in emissions, but can also be accessed flexibly. The CO₂UPLED researchers are developing special semiconductor-based thin-film photoelectrodes that are designed to work more efficiently than previous materials. These photoelectrodes are coupled with catalysts to accelerate the chemical reactions required to convert water and CO₂ into fuels. The aim is to create cost-effective, scalable and stable systems. The project aims to contribute to the energy transition by closing the gap between intermittent solar energy and continuously available fuels.