Perovskites are a family of crystals that show promising properties for applications in nanotechnology. However, a property called carrier multiplication, an effect that makes materials much more efficient in converting light into electricity, has not been observed in perovskites. New research, led by UvA-IoP physicists Dr. Chris de Weerd and Dr. Leyre Gomez from the group of Prof. Tom Gregorkiewicz, now reports that certain perovskites do have this desirable property.