Researchers at Johannes Kepler University Linz (JKU), Austria, have developed ultra-light, flexible solar cells that are 20 times thinner than human hair and can power devices like drones without the need for wired charging. Made using a special material called quasi-2D perovskite, these solar cells offer high flexibility and a power output of 44 watts per gram, far surpassing traditional silicon-based cells. Their lightweight design allows them to be integrated into devices without adding bulk or reducing performance.
In a practical test, these innovative solar cells were fitted onto a palm-sized drone. The drone could charge itself using sunlight, fly, and recharge again without connecting to any power source. This breakthrough shows the potential of these cells for use in space exploration, rescue missions, wearable devices, and Internet of Things (IoT) gadgets, where long-term, self-sufficient energy generation is critical.
Unlike conventional batteries and solar panels that are heavy and environmentally harmful, these perovskite cells are eco-friendly, cost-effective, and energy-efficient. Their development marks a significant step toward creating self-powered systems for use both on Earth and in space. This technology could revolutionize energy generation across industries, enabling lightweight, autonomous devices to operate anywhere light is available.
Read full article here: https://www.uncoverreality.in/2025/07/solar-cells-thinner-than-hair-power.html
Reference:Hailegnaw, B., Demchyshyn, S., Putz, C.et al.Flexible quasi-2D perovskite solar cells with high specific power and improved stability for energy-autonomous drones.Nat Energy9, 677–690 (2024).https://doi.org/10.1038/s41560-024-01500-2
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