Recently, LONGi announced two major technological breakthroughs. First, its independently developed Hybrid Interdigitated-Back-Contact (HIBC) solar cell has been certified by the Institute for Solar Energy Research Hamelin (ISFH) in Germany, achieving a photoelectric conversion efficiency of 28.13%. This marks yet another step forward toward the efficiency limit of crystalline silicon solar cells, following LONGi's previous efficiency record of 28.04% set in January 2026.
Second, Modules featuring HIBC solar cells have achieved certification from the U.S. National Renewable Laboratory of the Rockies (NLR), with efficiency breaking through to 26.4%. This has set a record surpassing LONGi’s previous record which pushed the crystalline silicon module efficiency to 26%.
As the ultimate solution for single-junction crystalline silicon cell technology, the HIBC cell developed by LONGi's Central R&D Institute represents a culmination of the strengths of various cell technologies. The R&D team has introduced core innovative technologies such as in-situ Patterned Edge Passivation (iPET) and Laser-Induced Crystallization modification (LIC).
By optimizing structural design, materials, and manufacturing processes, the team improved optical performance, interface passivation, and charge transport, helping establish a clear path toward commercializing ultra-high-efficiency crystalline silicon cells.
These hardcore breakthroughs in technological strength have already translated into a leading edge in mass production. This achievement marks the official completion of a complete closed loop spanning from laboratory R&D to large-scale commercial application for HIBC cells, delivering yet another premium clean energy solution to global customers, one that offers "high efficiency, high energy yield, aesthetic versatility, and certified safety and reliability”.
Moving forward, LONGi will continue to focus on technological innovation, accelerating the translation of laboratory efficiency breakthroughs into large-scale manufacturing, and serving the global energy transition with more competitive clean energy products to help build a zero-carbon and sustainable green energy ecosystem.
About LONGi
Founded in 2000, LONGi Green Energy Technology Co., Ltd. (LONGi) is committed to being the most valuable solar technology company in the world.
We work under the mission of making the best of solar energy to build a green world. Our brand is positioned to being the most trusted, reliable solar company that continues to blaze the trail for green technology. LONGi is developing solutions for large-scale power plants, different industries and households with its innovative-focused development. In the future, we will also supply Green Power and Green Hydrogen solutions for global zero-carbon development.