The National Solar Energy Institute (INES) arm of the French Alternative Energies and Atomic Energy Commission (CEA) claims to have achieved a 24.63% conversion efficiency for a heterojunction (HJT) solar cell based on a standard M2 wafer.
The feat was achieved in collaboration with the Enel Green Power renewable energy business of Italian state-owned power company and gas distributor Enel.
“The result was confirmed by the German Institute for Solar Energy Research in Hamelin (ISFH),” a spokesperson for Enel told pv magazine.
The Italian company said the bifacial cell’s front-side efficiency was raised by around 0.7% using an improved busbar-free screen printing metallization process based on heterojunction processes developed between Enel and INES, using manufacturing equipment provided by Swiss specialist Meyer Burger.