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.
Advanced surface passivation technology previously developed by the team was applied to the HJT cells, using low-cost indium-free targets to prepare transparent conducting oxide films. Process innovations enabled the cells to maintain a high conversion efficiency despite being completely indium-free. The high-efficiency HJT cells will effectively reduce dependence on indium resources in mass production and result in a significant reduction in costs.
LONGi has now achieved overall leadership in a number of new high-efficiency cell technologies,such as n-type and p-type TOPCon and n-type and p-type HJT, continually pushing the limits for commercial use of solar energy applications to new levels.
About LONGi
Founded in 2000, LONGi is committed to being the world’s leading solar technology company, focusing on customer-driven value creation for full scenario energy transformation.
Under its mission of 'Utilizing Solar Energy, Building a Green World' and brand philosophy of 'Steadfast and Reliable Technology Leadership', LONGi has dedicated itself to technology innovation and established five business sectors, covering mono silicon wafers, cells and modules, commercial & industrial distributed solar solutions, green energy solutions and hydrogen equipment. The company has honed its capabilities to provide green energy and has, more recently, also embraced green hydrogen products and solutions to support global zero carbon development. www.longi.com