LONGi has announced a new efficiency breakthrough for its Gallium-doped p-type HJT silicon solar cell. The new world record conversion efficiency of 25.47% for large-size p-type cells was achieved using a mass production process on full-size (M6, 274.3cm²) monocrystalline silicon wafers, the result, validated in testing carried out at the Institute for Solar Energy Research in Hamelin (ISFH), further demonstrating the feasibility of low-cost HJT mass production technology.
LONGi's R&D team has developed a p-type wafer processing solution for HJT cells and combined it with interface passivation technology to achieve a Voc of 747.6 mV for p-HJT cells. It should be noted that the processing of the low-cost p-HJT cell solution applied in this record has not yet been fully optimized and LONGi is convinced that this technology route still has great potential for further development.
LONGi remains at the forefront of innovation in cutting-edge PV technologies. In 2021, the company established an impressive series of efficiency records, with its n-type TOPCon, p-type TOPCon and n-type HJT cells achieving conversion efficiencies of 25.21%, 25.19% and 26.30% respectively.
Going forward, LONGi will continue to increase its investment in technology R&D and focus on customer value creation, in order to accelerate global energy transformation and contribute to the achievement of carbon reduction targets with its high-efficiency products continuing to deliver lower LCOE.