Indian scientists developed a self‑charging energy storage device powered by sunlight

• Photo-capacitor: a single integrated device that simultaneously harvests sunlight and stores it electrochemically, eliminating the need for separate solar panel + battery + power-management electronics.
• Developed by Centre for Nano and Soft Matter Sciences (CeNS), Bengaluru, an autonomous institute under DST.
• Relevant for GS-III S&T (indigenous innovation, clean energy) and prelims facts on DST autonomous bodies + supercapacitor science.