Only days after setting a record of 25.47% for efficiency of its p-type HJT cells, LONGi has announced a new record of 25.40% for its indium-free HJT cells. This record, once again validated in testing carried out by the Institute for Solar Energy Research (ISFH) in Hamelin, Germany, was achieved on M6 (274.5cm2) full-size monocrystalline silicon wafers, confirming the basis for industrialisation of the low-cost technology route for HJT cells, following ongoing research by LONGi’s R&D team.