LONGi said it has achieved an efficiency rating of 26.81% for an unspecified heterojunction solar cell confirmed by Germany's Institute for Solar Energy Research in Hamelin (ISFH).

Chinese PV module maker LONGi has revealed that its unspecified heterojunction (HJT) solar cells based on full-size silicon wafers have achieved a power conversion efficiency of 26.81% and are in mass production. This result was confirmed by ISFH in Germany.

Martin Green, a professor at the University of New South Wales in Australia and creator of the "Solar Cell Efficiency Table", said the result is the highest efficiency record for a silicon solar cell to date.

“This outstanding achievement will be included in the next edition of the efficiency tables published in PV Advances,” he said, noting that the previous record of 26.7% was set by an unspecified Japanese manufacturer in 2017. Longi may be referring to the results achieved by the Japanese chemical company Kaneka. Its 180cm² crystalline silicon device using heterojunction and back contact technology achieved 26.63% efficiency.

"LONGi broke new world records for the conversion efficiency of silicon solar cells with 26.74%, 26.78% and 26.81% respectively, further affirming LONGi's determination to continue to focus on R&D investment and promote industrial progress," the Chinese manufacturer said. .

In September, the company said it had achieved 26.12% efficiency for its gallium-doped p-type heterojunction (HJT) solar cells based on M6 wafers. The company also achieved an efficiency of 25.47% for the same solar cell in March.

Furthermore, the Chinese manufacturer recorded an efficiency of 26.5% for n-type heterojunction solar cells in June and 25.19% for its p-type TOPCon solar cells in July 2021. In June 2021, it achieved an efficiency rating of 25.21% for n-type TOPCon PV cells.