defects

Atomic defects are inevitable: No material is completely free of defects. However, what was long considered primarily a weakness could also be a strength. Researchers at Christian-Albrechts-University of Kiel (CAU) have now shown that such defects can not only absorb energy but also selectively tran...

Institute of Science and Technology Austria
2/26/2026

Defect-filled lead-halide perovskites rival silicon solar cells because domain walls inside the material separate and guide charges. Researchers visualized these charge-transport networks using a novel silver-staining technique, resolving a long-standing efficiency mystery. Perovskites made from lead halides are produced through low-cost solution processing and contain many defects. Even so, they…