Record efficiency of 26.81% for large silicon solar cells

Technology News |
By Nick Flaherty

Chinese solar cell developer Longi Green Energy Technology is claiming a new record efficiency for its full sized monocrystalline silicon wafers at 26.81%.

This is certified by the Institut für Solarenergieforschung in Hameln (ISFH) and exceed the previous record of 26.7% in 2017 for a heterojunction (HJT) cell. This combines a crystalline silicon cell sandwiched between two layers of amorphous thin-film silicon layers. This is also the first Chinese company to achieve a record value.

“This outstanding achievement will be included in the next version of efficiency tables that published in the progress in photovoltaics,” said Martin Green, a professor at the University of New South Wales in Australia.

“Improving the efficiency and reducing the LCOE (levelized cost of energy) is the eternal theme of the development of photovoltaic industry,” said Li Zhenguo, Founder and President of Longi. “Solar cell efficiency is the beacon of photovoltaic technology innovation. Every 0.01% improvement in solar cell conversion efficiency requires enormous efforts. In particular, crystalline silicon solar cells account for nearly 95% of the current photovoltaic market, so the ultimate efficiency of crystalline silicon solar cells also shows the development potential and direction of the photovoltaic industry, which is of great significance in the entire photovoltaic industry.”

Dr.Xu Xixiang, Vice President of Longi Central R&D Institute, said that breaking the world record was a milestone in the history of China’s photovoltaic industry and a boost for its research. Since June 2021, Longi’s R&D team increased efficiency from 25.26% to 26.81% on large-size silicon wafers.

Founded in 2000, Longi has five business sectors, covering mono silicon wafers cells and modules, commercial & industrial distributed solar solutions, green energy and hydrogen equipment.

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