A team of Indian scientists from the Centre for Nano and Soft Matter Sciences (CeNS) in Bengaluru, under the Department of Science and Technology (DST), has successfully developed a scalable next-generation device that produces green hydrogen by splitting water molecules. This green hydrogen, considered one of the cleanest fuels available, has the potential to decarbonize industries, power vehicles, and store renewable energy. The innovative device developed by Dr. Ashutosh K. Singh and his team at CeNS utilizes only solar energy and earth-abundant materials, eliminating the need for fossil fuels or expensive resources. The research, published in the Journal of Materials Chemistry A, highlights the design of a silicon-based photoanode with a unique heterojunction architecture, allowing for enhanced charge separation and transport efficiency. The device, deposited using magnetron sputtering, demonstrated excellent performance in generating hydrogen under solar energy, with remarkable stability over a 10-hour continuous operation. The device's high efficiency, durability, and cost-effective materials make it a promising solution for clean energy production. The team envisions the technology to be scaled up for hydrogen-based energy systems in various settings, from homes to factories, all driven by the abundant power of the sun.