The Energy Storage Report 2024

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LONGi announces new world record cell efficiencies


LONGi has announced that it has established new cell efficiency world records of 26.56% for a p-type HJT cell and 26.09% for an indium-free HJT cell, based on an M6 full-size mono-crystalline silicon wafer and its self-developed mass production process, the results certified by Germany’s Hamelin Solar Energy Research Institute (ISFH).

Addressing the long term pain point of HJT cells, LONGi’s R&D team focused on market demand and technological innovation to achieve the new conversion efficiency for its commercial gallium-doped silicon wafer, 0.44% higher than the 26.12% announced in September this year.

In the case of indium-free HJT cells, the team replaced traditional indium-based transparent conductive film with alternative cheaper and environmentally friendly materials to achieve the new efficiency, once again reflecting the potential of HJT technology in terms of technical improvement and cost reduction. The development also offers a potential solution to the industry’s dependence on indium for large-scale mass production, signalling a way forward for HJT to move towards terawatt scale production levels.

LONGi has now broken cell conversion efficiency world records no less than 12 times since April 2021, in such technical fields as n-type and p-type TOPCon, n-type and p-type HJT and indium-free HJT.

Moving forward, the company will continue to be at the forefront of the PV industry’s technological development, accelerating the commercialization of its HJT products to contribute to the goal of global energy transformation.

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