Paper-thin solar panels break efficiency barriers with flexible design

Researchers at Soochow University have created a solar cell as thin as paper. The breakthrough design combines multiple light-absorbing layers to boost efficiency. Early tests show it outperforms many existing thin-film technologies while remaining flexible and durable.

The new solar panel stacks crystalline silicon and perovskite layers to capture more sunlight than single-layer cells. In 2024 lab tests, it reached 18.1% efficiency—higher than traditional thin-film panels (usually 10-15%) but still below crystalline silicon cells (over 25%). Field trials confirmed its stability even when bent or flexed repeatedly.

Its paper-like thinness makes it adaptable for unusual surfaces, from curved structures to portable devices. The team suggests potential uses in spacecraft, where lightweight, durable power sources are critical. Data centres and other energy-heavy facilities could also benefit from its long-term reliability.

Unlike rigid panels, this design opens doors for solar integration in everyday materials. The flexibility does not compromise performance, maintaining consistent output under real-world conditions.

The ultra-thin panel marks a step forward in solar technology, balancing efficiency with practical flexibility. Its layered structure and durability could expand solar power applications beyond traditional setups. Further testing will determine its suitability for large-scale energy projects and specialised uses like space missions.