A team of Indian scientists from the Centre for Nano and Soft Matter Sciences (CeNS) in Bengaluru, an institute under the Department of Science and Technology, has successfully developed a scalable next-generation device for producing green hydrogen. This achievement is significant as green hydrogen is a clean fuel that can decarbonize industries, fuel vehicles, and store renewable energy efficiently. The device operates solely on solar energy and utilizes accessible materials, eliminating the need for fossil fuels or expensive resources. The research team engineered a silicon-based photoanode with a novel heterojunction architecture, comprising stacked semiconductor layers that enhance charge separation and transport efficiency. The materials were deposited using a scalable technique, ensuring precision and efficiency in the production process. The device demonstrated exceptional performance in generating hydrogen under solar energy, with high efficiency, stability, and durability, even operating continuously for over 10 hours with minimal performance degradation. The device's success lies in its high efficiency, low energy consumption, durability, and cost-effective materials, making it a promising technology for widespread applications. The researchers envision this technology playing a crucial role in hydrogen-based energy systems for various sectors, offering a sustainable and efficient solution powered by solar energy.