Longi Green Energy's BC Technology Shatters Silicon Solar Cell Efficiency Record With 27.09%
Recently, LONGi Green Energy announced that its self-developed back-contact crystalline silicon heterojunction solar cell (HBC) has successfully passed the certification of the Hamelin Institute for Solar Energy Research in Germany, and has achieved a cell conversion efficiency of 27.09% using an all-laser patterned mass-produced process technology, setting a new record for the efficiency of monocrystalline silicon solar cells. This is another breakthrough after LONGi Green Energy set a world record for silicon solar cell efficiency of 26.81% in November 2022.
The breakthrough of back-contact crystalline silicon heterojunction solar cells is mainly due to LONGi's continuous independent innovation and research and development, which abandons the high-cost lithography process and adopts all-laser patterning technology to achieve higher conversion efficiency. Compared with bifacial heterojunction cells, HBC solar cells reduce the use and process cost of traditional indium-based transparent conductive films (ITO). Through continuous technological improvement, LONGi's R&D team has developed an ultra-thin indium-less TCO film, which further reduces the cost, proving that HBC solar cells are an efficient and low-cost industrialization technology with independent intellectual property rights.
As the world's leading solar technology company, LONGi Green Energy is driven by innovation, leading the global energy revolution with high-efficiency, low-cost, and high-reliability solar cells and modules. Before breaking the world record for silicon solar cell efficiency with 27.09%, LONGi Green Energy was already the "double champion" of the world records of cell efficiency in the two major tracks of crystalline silicon single-junction cell and crystalline silicon-perovskite tandem cell, and was included in the "Solar Cell Maximum Research Efficiency Chart" released by the National Renewable Energy Laboratory (NREL) in the United States and the "Solar Cell Efficiency Table" by Professor Martin Green, the "Father of Solar Energy".