LONGi Achieves 34.85% Efficiency in Tandem Perovskite Solar Cell

LONGi has developed a two-terminal crystalline silicon-perovskite tandem solar cell that achieved a conversion efficiency of 34.85%, the company said, citing certification from the US National Renewable Energy Laboratory (NREL). With this development, LONGi claims to have broken the world record for efficiency in crystalline silicon-perovskite tandem cells.

Crystalline silicon-perovskite tandem solar cells are considered a leading technology for next-generation, ultra-efficient solar cells. The technology has a theoretical efficiency limit of 43%, significantly higher than the Shockley-Queisser limit of 33.7% for single-junction solar cells.

LONGi’s Tandem Solar Cell R&D Team Pushed Boundaries Of This Technology:

• November 2023: Achieved a tandem solar cell efficiency of 33.9%, approaching the SQ limit.
• June 2024: Broke new ground with 34.6% conversion efficiency.

Latest Milestone: Now, within a year, LONGi has achieved a new world record of 34.85% efficiency, showcasing the formidable R&D capabilities and relentless innovation drive of the LONGi Central Research Institute.

LONGi Announced Achievement Wuhu Base In Anhui  

Last week at LONGi’s Wuhu Base in Anhui, the company also announced a achievement. LONGi independently developed Hybrid Interdigitated-Back-Contact (HIBC) crystalline silicon solar cell has attained a 27.81% conversion efficiency, certified by Germany’s Institute for Solar Energy Research Hamelin (ISFH). This milestone elevates the exploration of monocrystalline silicon solar cell efficiency to unprecedented levels.

With this breakthrough, LONGi has simultaneously refreshed its own world records in both single-junction crystalline silicon solar cells and crystalline silicon-perovskite tandem solar cells. This dual achievement reinforces LONGi’s position as the “Dual-Champion” in solar innovation and solidifies its leadership in core photovoltaic technologies.

As a globally leading solar technology company, LONGi places paramount emphasis on independent innovation and technological R&D, consistently advancing cost reduction and efficiency improvement across the photovoltaic industry through the industrialization of cutting-edge technologies. These approaches have enabled LONGi to establish a highly efficient R&D system and robust technology reserves, characterized by the strategy of “mass production for one generation, R&D for the next, and technology reserves for the future.”

Looking ahead, LONGi will remain unwavering in its commitment to technological innovation, leveraging self-developed breakthroughs and original technologies to accelerate the global energy transition.