Trina Solar Sets Efficiency Record of 23.22% With i-TOPCon Solar Cell

Trina Solar has set a new world record of 23.22 percent for a high-efficiency large-area quasi-monocrystalline n-type (c-Si) i-TOPCon solar cell.

Trina Solar has announced that its State Key Laboratory (SKL) of PV Science and Technology (PVST) of China has set a new world record of 23.22 percent for a high-efficiency large-area quasi-monocrystalline n-type (c-Si) i-TOPCon solar cell.

The record-breaking n-type bifacial i-TOPCon solar cell was fabricated with a low-cost industrial process of advanced i-TOPCon (Industrial Tunnel Oxide Passivated Contact) technologies, on a large-sized phosphorus-doped Cast-mono Si substrate. The 247.79 cm2 bifacial solar cell reached a total-area front side efficiency of 23.22 percent. This result has been independently confirmed by the ISFH CalTeC in Germany.

“We are very delighted to announce the latest achievement from our technology research team at the SKL PVST. To the best of our knowledge, this is the new world record for a total-area efficiency for a large-area cast-mono silicon solar cell,” said Dr. Zhiqiang Feng, director of State Key Laboratory (SKL) of PV Science and Technology of Trina Solar.

“The excellent R&D results lay a solid foundation for Trina to provide new differentiated high-end PV modules and solutions to our customers.”

In June, we reported that the firm had begun mass production of N-type i-TOPCon double-glass bifacial modules. The firm had revealed that the best frontside power output of the module with 144 half-cut i-TOPCon cells reaches 425 Wp, and the best module efficiency reached 20.7 percent.

In May, the company announced that its SKL of PVST had set a new world record of 24.58 percent for a high-efficiency n-type monocrystalline silicon (c-Si) i-TOPCon solar cell. The bifacial solar cell reached a total-area front side efficiency of 24.58 percent, without using any dedicated aperture during the illumination. This result has been independently confirmed by the ISFH CalTeC in Germany.