
LONGi Sets New World Record for Solar Cell Efficiency in 2023
Introduction
In a groundbreaking achievement, LONGi Green Energy Technology Co., Ltd., a leading solar technology company, has set a new world record for the efficiency of crystalline silicon-perovskite tandem solar cells. With an impressive efficiency rate of 33.9%, LONGi has surpassed the previous record of 33.7% set by King Abdullah University of Science & Technology (KAUST) earlier this year. This remarkable milestone showcases LONGi’s commitment to pushing the boundaries of solar technology and driving the global transition toward clean and sustainable energy solutions.
Record-Breaking Efficiency
LONGi’s achievement in solar cell efficiency has been independently verified and certified by the U.S. National Renewable Energy Laboratory (NREL). The latest certification report confirms that LONGi’s crystalline silicon-perovskite tandem solar cells have reached an efficiency of 33.9%, making them the most efficient solar cells in the world. This breakthrough in efficiency is a significant advancement from LONGi’s previous milestones, including 31.8% efficiency announced at the SNEC 2023 conference and 33.5% efficiency showcased at the InterSolar Europe 2023 exhibition.
Advantages of Tandem Solar Cells

The new world record efficiency of 33.9% demonstrates the advantages of crystalline silicon-perovskite tandem solar cells over traditional crystalline silicon single junction solar cells. By surpassing the theoretical efficiency limit of single junction solar cells, LONGi’s tandem solar cells provide meaningful empirical data to support their superior efficiency. This breakthrough technology opens up new possibilities for next-generation high-efficiency solar cell development.
Significance for the Photovoltaic Industry
The efficiency of solar cells plays a crucial role in evaluating the potential of photovoltaic technologies. As a mainstream solar cell technology, crystalline silicon single-junction cells continue to improve, inching closer to their theoretical efficiency limit of 29.4%. However, the emergence of crystalline silicon-perovskite tandem technology presents a new track for achieving even higher efficiency levels. The theoretical efficiency limit of crystalline silicon-perovskite tandem solar cells can reach 43%, making it the mainstream technical solution to break through the efficiency limit of traditional single-junction cells.
Implications for China and the Global Photovoltaic Market

LONGi’s new world record of 33.9% efficiency in crystalline silicon-perovskite tandem solar cells positions the company as a global leader in this cutting-edge technology. Hua Jiang, Deputy Secretary-General of the China Photovoltaic Industry Association (CPIA), emphasizes that reducing costs and increasing efficiency are at the core of the photovoltaic industry’s development. The continuous improvement in solar cell conversion efficiency is a vital measure to reduce the levelized cost of electricity (LCOE) in photovoltaic power generation.
Once high-efficiency solar cell technology achieves mass production, the cost of photovoltaic power generation will significantly decrease, driving the growth of the global photovoltaic market. China, being at the forefront of photovoltaic industry advancements, will play a pivotal role in promoting the global energy transition. LONGi’s technological innovation and commitment to exploring cutting-edge development technologies contribute to China’s leadership in the photovoltaic industry.
LONGi’s Commitment to Technological Innovation

LONGi’s dedication to technological innovation has propelled the company’s success in the solar industry. Driven by the mission of “making the best of solar energy to build a green world,” LONGi focuses on customer-driven value creation for full scenario energy transformation. The company has established five business sectors, including mono silicon wafers, cells and modules, commercial & industrial distributed solar solutions, green energy solutions, and hydrogen equipment.
Recognizing the importance of cost reduction, efficiency improvement, and innovation, LONGi closely monitors industry changes and collaborates with multiple parties to create efficient models and collaborative innovation mechanisms. This approach not only strengthens LONGi’s competitive advantage but also supports the industry’s overall development cycle.
Conclusion
LONGi’s achievement in setting a new world record for the efficiency of crystalline silicon-perovskite tandem solar cells marks a significant advancement in solar technology. With an efficiency rate of 33.9%, LONGi has surpassed previous records and demonstrated the advantages of tandem solar cells over single-junction cells. This breakthrough opens up new possibilities for high-efficiency solar cell technology, driving the global transition toward cleaner and more sustainable energy solutions.
As a leader in the photovoltaic industry, LONGi’s commitment to technological innovation and continuous improvement contributes to China’s position as a global leader in the solar sector. By pushing the boundaries of solar technology, LONGi plays a crucial role in promoting the growth of the global photovoltaic market and driving the transition to a greener future.
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