Longi Breaks Efficiency Record with Silicon-Perovskite Tandem Solar Cells
Longi, a Chinese solar manufacturer, recently announced a groundbreaking achievement in the field of solar technology. The company revealed that it had broken a world record for efficiency with its crystalline silicon-perovskite tandem solar cells, reaching an impressive certified efficiency of 34.85 per cent.
This remarkable feat was the result of Longi’s independent development of the two-terminal crystalline silicon-perovskite tandem solar cells, which set a new standard in efficiency. The certification of this achievement was carried out by the United States’ National Renewable Energy Laboratory (NREL), further validating Longi’s technological advancement.
Pushing the Efficiency Limits
Crystalline silicon-perovskite tandem solar cells have the potential to achieve a theoretical efficiency limit of 43 per cent, surpassing the traditional Shockley-Queisser (SQ) limit for single-junction solar cells, which stands at 33.7 per cent. This breakthrough underscores the significant progress made in solar energy technology by Longi.
Continuous Research and Development
Longi’s latest efficiency record is the culmination of 18 months of dedicated research and development efforts focused on enhancing the performance of solar cells. The company had previously announced achievements in this area, with a tandem solar cell efficiency of 33.9 per cent in November 2023 and 34.6 per cent in June 2024.
Building on these milestones, Longi has now achieved a remarkable conversion efficiency of 34.85 per cent, demonstrating the company’s commitment to innovation and technological advancement. The Longi Central Research Institute played a pivotal role in this achievement, showcasing its exceptional R&D capabilities.
Setting New Standards
In addition to the efficiency record for tandem solar cells, Longi also made waves with its Hybrid Interdigitated-Back-Contact (HIBC) crystalline silicon solar cells. The company achieved a conversion efficiency of 27.81 per cent for these cells, a record that was certified by Germany’s Institute for Solar Energy Research Hamelin (ISFH).
These dual achievements further establish Longi’s reputation as a leader in solar innovation, with its R&D department spearheading groundbreaking advancements in the industry. The company’s relentless pursuit of excellence has positioned it as a “Dual-Champion” in the field of solar technology.
