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

Researchers in Germany and Spain developed a 10-minute vacuum coating method for perovskite-silicon tandem solar cells.

Using close-space sublimation, the team deposited uniform perovskite layers on multiple silicon surface types.

The best devices reached 24.3% efficiency, showing strong performance on textured silicon.

The solvent-free process could help make tandem solar manufacturing faster, cheaper, and easier to scale.