Solar cell specs usually quote an open-circuit voltage and a short-circuit current. Between these extremes, the voltage that a solar cell can produce depends on how much current it’s producing.

Further details of the setup and the results are provided in the study “ Outdoor implied open-circuit voltage imaging of perovskite solar cells using sunlight excitation,” published in Joule.

DAS Solar has announced that it has broken the world record for a TOPCon 4.0 Plus high-efficiency cell by achieving an efficiency of 26.36% and an open-circuit voltage of 742mV.