Nanotech Breakthrough Sets World Record For Solar Cell Efficiency

Tandem solar cells made of perovskite and silicon enable significantly higher efficiencies than silicon solar cells alone. By the end of 2021, teams at HZB (Helmholtz-Zentrum Berlin für Materialien und Energiehad) presented perovskite silicon tandem solar cells with an efficiency close to 30 percent. This value was a world record for eight months, a long time for this hotly contested field of research. In the journal Nature Nanotechnology, the scientists described how they achieved the new record value over 31% with nanooptical structuring…