A recent collaborative study led by experts at Flinders University, along with partners from the US and Germany, has unveiled a cutting-edge solar cell process that could revolutionize the generation of green hydrogen from water using solar power. The research revolves around a new type of solar material, core and shell Sn(II)-perovskite oxide, which has shown potential as a catalyst for the crucial oxygen evolution reaction in hydrogen production. This breakthrough, detailed in The Journal of Physical Chemistry C, represents a significant advancement in electrolysis for producing clean hydrogen energy, with a focus on cost-effectiveness and efficiency. Lead author Professor Gunther Andersson emphasizes the importance of this study in stabilizing tin compounds effectively for water applications, while Professor Paul Maggard underscores the material's ability to harness sunlight energy for fuel-generating reactions. The researchers highlight the potential of this novel chemical strategy to absorb a wide range of solar energy and drive sustainable reactions on the material's surfaces. The study's outcomes are poised to contribute to the development of carbon-free technologies, particularly in the context of high-performance and cost-effective electrolysis. Through the collaboration of experts from various institutions, including Flinders University, Baylor University, and Universität Münster, this research sheds light on the possibilities of green hydrogen production and its role in achieving sustainable energy solutions. Overall, this innovative solar cell breakthrough represents a significant step towards advancing green hydrogen technologies and leveraging renewable energy sources for a cleaner and more sustainable future.