LONGi, the world’s leading solar technology company, has achieved another major breakthrough in solar cell research and development. The company has independently developed a two-terminal crystalline silicon-perovskite tandem solar cell that has reached a certified conversion efficiency of 34.85%, according to the U.S. National Renewable Energy Laboratory (NREL). This achievement sets a new world record for crystalline silicon-perovskite tandem cell efficiency.
Crystalline silicon-perovskite tandem solar cells, regarded as a key technology for next-generation ultra-high-efficiency solar cells, have a theoretical efficiency limit of 43%, significantly higher than the Shockley-Queisser (SQ) limit for single-junction cells, which stands at 33.7%. LONGi’s R&D team has continually advanced this technology:
- November 2023: Reached a tandem cell efficiency of 33.9%, nearing the SQ limit.
- June 2024: Set a new record with 34.6% conversion efficiency.
- Latest Achievement: In less than a year, LONGi has now raised the bar to 34.85%, demonstrating the strong R&D capabilities and innovative momentum of the LONGi Central Research Institute.
Additionally, during an event last week at its Wuhu Base in Anhui, LONGi announced another remarkable development: the company’s independently developed Hybrid Interdigitated-Back-Contact (HIBC) crystalline silicon solar cell achieved a certified efficiency of 27.81%, verified by Germany’s Institute for Solar Energy Research Hamelin (ISFH). This breakthrough marks a significant step forward in pushing the efficiency limits of monocrystalline silicon solar cells.
With these latest milestones, LONGi has set new world records in both single-junction crystalline silicon solar cells and crystalline silicon-perovskite tandem solar cells. This dual success reinforces LONGi’s status as the “Dual Champion” in solar innovation, underscoring its leadership in core photovoltaic technologies.
As a global leader in solar technology, LONGi prioritizes independent innovation and technological R&D, continuously driving cost reductions and efficiency gains in the photovoltaic industry through the industrialization of advanced technologies. This approach has allowed LONGi to build an efficient R&D system and strong technology reserves, following the strategy of “mass production for today, R&D for tomorrow, and technology reserves for the future.” Moving forward, LONGi remains dedicated to innovation, leveraging its in-house breakthroughs and original technologies to accelerate the global energy transition.
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