Perovskite solar cells hit 24.3% efficiency with new 10-minute vacuum process

A German-Spanish team developed a 10-minute close-space sublimation process to coat perovskite layers on textured silicon.

The method produced perovskite-silicon tandem solar cells with efficiency up to 24.3%.

It worked across different surface types and used a solvent-free, vacuum-based approach.

The fast, scalable process could lower manufacturing costs and speed commercial rollout of next-generation solar cells.