In a significant advancement towards sustainable energy, researchers at the Centre for Nano and Soft Matter Sciences (CeNS), Bengaluru, have successfully created a scalable, next-generation device for producing green hydrogen exclusively using solar energy and earth-abundant materials. Green hydrogen, a zero-emission fuel crucial for decarbonizing industries and enabling renewable energy storage, has faced obstacles in cost-effective large-scale production. The CeNS team's device combines smart materials in a unique heterostructure, utilizing a silicon-based photoanode with advanced semiconductor architecture. The study, published in the Journal of Materials Chemistry A, emphasizes the system's efficient light absorption, charge separation, and transport efficiency. The device, deposited using magnetron sputtering, boasts impressive results like high surface photovoltage, low onset potential, and stability over extended operational periods. The researchers highlight the technology's scalability and readiness for industrial deployment, envisioning its role in powering homes, factories, and transportation networks. This breakthrough in solar-powered hydrogen production marks a crucial step towards a sustainable and renewable energy future.