Tailor-made evaporable acceptor dyes for the next generation of organic solar cells

In the context of climate change and growing energy demands, photovoltaics stand as a critical solution on the path toward climate neutrality. While traditional solar modules, made from inorganic semiconductors, are energy-intensive to produce, organic solar cells (OSCs) offer a promising alternative. Unlike conventional silicon-based cells, OSCs are composed of conductive organic molecules that can be deposited in nanometer-thin layers. This innovative technology allows for the production of lightweight, flexible solar cells that are resource-efficient, opening new possibilities for sustainable energy generation.

However, one of the current challenges hindering the widespread adoption of OSCs is their relatively low efficiency and limited lifespan, largely due to the use of fullerene C60 as a light absorber. The goal of this interdisciplinary project is to develop novel organic dyes with tailored structures to replace C60, thereby significantly improving the performance of OSCs. A key differentiator of this project is its integration of digital tools into the development process. Through advanced computer modeling, we can predict the molecular properties of potential dye candidates and assess their suitability for photovoltaic applications before proceeding with complex laboratory synthesis. This approach streamlines the research by focusing resources on the most promising materials, increasing the likelihood of success in subsequent application testing.

The project aims to solidify the market presence of cost-effective OSC technology, contributing to a larger share of green electricity through the development of innovative, sustainable products.

The project is funded by the STAEDTLER Foundation.