New solar cells hit 30% efficiency and still work after 1,000 hours of power

Chinese researchers improved all-perovskite tandem solar cells with an additive-based crystallization strategy.

The rigid device reached a certified 30.3% efficiency, while the flexible version achieved 28.0%.

The cells retained 92% of their output after 1,000 hours of operation, showing strong durability.

The advance could enable cheaper, lighter solar panels that outperform conventional silicon and are practical for real-world use.