We are proud to present the maiden issue of Photomaterials & Devices, an open-access journal dedicated to pioneering research at the intersection of light, advanced materials, and next-generation technologies. This issue features cutting-edge developments in photo-functional materials, optoelectronics, solar cells, and photocatalysis. Bridging fundamental physics with real-world applications, the journal serves as a forward-thinking platform driving the future of smart, light-driven innovations.