Chinese module maker Trina Solar says its government-supported state key laboratory of PV science and technology has fabricated a 23.39% efficient PERC cell using standard manufacturing equipment and normal production processes.
Trina said it believes the device is the most efficient of its type to have had its performance confirmed by an ISO/IEC 17025-certified calibration laboratory.
The bifacial 252cm2 cell, which features the manufacturer’s nine-busbar technology, was calibrated at ISFH CalTeC in Germany under full area illumination – with full front metallization taken into account – on a brass chuck in contact with the whole rear side, according to its developer.