LONGi Green Energy Technology Co., Ltd., a global leader in solar technology, achieved a groundbreaking milestone on December 18, 2023. They announced the development of crystalline silicon heterojunction back-contact (HBC) solar cells with an unprecedented efficiency of 27.09%, certified by the Institute for Solar Energy Research Hamelin (ISFH) in Germany. This achievement surpasses the previous record of 26.81% set in November 2022, marking a significant advancement in single-crystalline silicon solar cell technology.
The key to this breakthrough lies in LONGi’s innovative approach to cell patterning. By adopting an all-laser patterning process, they overcame the high costs associated with traditional photolithography methods. This technological innovation not only enabled the production of the record-breaking HBC cells but also contributes to cost reduction in manufacturing.
Moreover, LONGi’s HBC cells offer advantages over bifacial heterojunction solar cells, including reduced usage of transparent conductive oxide layers (ITO). Through continuous R&D efforts, LONGi has developed an ultra-thin TCO layer with significantly lower indium usage, achieving a remarkable reduction compared to traditional cells.
Li Zhenguo, Founder & President of LONGi, emphasized the company’s commitment to innovation and its mission of leveraging solar energy to create a sustainable future. He highlighted photovoltaics as a crucial component of global energy transition and reiterated LONGi’s dedication to delivering high-quality, high-efficiency solar cell technology.
Founded in 2000, LONGi has positioned itself as a leading player in the solar industry, focusing on customer-driven value creation for comprehensive energy transformation. With a mission to “make the best of solar energy to build a green world,” LONGi has invested in technology innovation across five business sectors: mono silicon wafers cells and modules, commercial & industrial distributed solar solutions, green energy solutions, and hydrogen equipment.
In addition to advancing solar energy solutions, LONGi has expanded its portfolio to include green hydrogen products and solutions, aligning with global efforts towards zero-carbon development.
In summary, LONGi’s achievement of developing HBC solar cells with a record efficiency of 27.09% marks a significant milestone in the advancement of solar technology. Through innovative approaches to cell patterning and material usage, LONGi continues to drive progress towards a sustainable future, embodying its commitment to leveraging solar energy for the benefit of society and the environment.
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