LONGi has once again rewritten the record books in solar cell efficiency, achieving a conversion rate of 34.85% for its silicon-perovskite tandem solar cell, certified by the U.S. National Renewable Energy Laboratory (NREL).
This breakthrough surpasses the previous world record for this next-generation technology, which combines crystalline silicon and perovskite layers to unlock unprecedented efficiency gains.
The tandem cell architecture, hailed as a cornerstone of ultra-high-efficiency solar innovation, boasts a theoretical efficiency limit of 43%—dwarfing the Shockley-Queisser (SQ) limit of 33.7% for single-junction cells. LONGi’s R&D team, advancing this frontier technology, previously set milestones with 33.9% efficiency in November 2023 and 34.6% in June 2024.
In a separate announcement, LONGi revealed that its hybrid interdigitated-back-contact (HIBC) crystalline silicon solar cell achieved 27.81% photoelectric conversion efficiency, validated by Germany’s Institute for Solar Energy Research Hamelin (ISFH). This achievement further pushes the boundaries of monocrystalline silicon photovoltaic efficiency.
