LONGi Hits 35.5% Efficiency in Tandem Solar Cell Milestone

This latest achievement marks a swift progression for the LONGi Central Research Institute, which pushed its tandem cell efficiency from 33.9% in late 2023 to 35.5% in just over 18 months. These cells are designed to surpass the 33.7% Shockley–Queisser limit inherent to traditional single-junction silicon, with a theoretical ceiling reaching 43%.

Beyond lab-scale records, the company is bridging the gap to mass production. Recent tests confirmed conversion efficiencies of 34.3% and 32.2% on larger industrial-scale surfaces, while tandem modules reached 31.4% and 29.4% respectively. These figures, already recognized in the University of New South Wales Solar Cell Efficiency Tables, suggest the technology is nearing practical deployment. LONGi maintains a tiered research strategy to transition these high-performance cells from controlled environments into global energy markets.