China Reclaims Solar Crown with Record-Breaking Perovskite Panel

The race for solar efficiency has shifted back to China. While South Korea’s Qcells previously set a world record for large-area silicon solar cell efficiency at 28.6%, Trina Solar has officially shattered that record by achieving a conversion efficiency of 29.2%.

This is not merely a laboratory achievement. Trina Solar reached this 29.2% efficiency level using industry-standard 210 mm wafers, demonstrating that the technology can be manufactured at commercial dimensions. The company also reported efficiencies of 32.6% on half-cut cells. This progress moves perovskite-on-silicon tandem design out of the lab and closer to large-scale deployment.

The technical mechanism remains consistent with recent breakthroughs: stacking a perovskite layer to absorb higher-energy wavelengths on top of a silicon layer that captures remaining light. Trina Solar developed a new interconnection structure between these layers to reduce energy losses and improve electrical current flow. The resulting module produced 907 watts of power, an increase from the company’s previous record of 808 watts.

This efficiency leap matters because it directly impacts the economics of solar deployment. High-end commercial panels typically operate at 21% to 23% efficiency. By pushing output toward 907 watts per module, the industry moves closer to a reality where solar projects can shrink in physical size while increasing power density.

The implications are clear for the global energy supply chain. The ability to achieve these figures on 210 mm wafers suggests that the primary hurdle—scaling from small cells to mass-manufacturable modules—is being addressed. As China captures this efficiency lead, the competitive pressure on silicon-only manufacturers will intensify.

Watch the manufacturing throughput of these tandem cells. The record is significant, but the true test remains whether these 29.2% efficient modules can maintain stability across decades of field deployment.