The Chinese Academy of Metrology and Science has certified Jolywood’s 26.7% efficiency rating for n-type tunnel oxide passivated (TOPCon) solar cells, which the company says is a world record. In November 2022, it reported a 26.1% efficiency rating for the equivalent cell.
The Chinese Academy of Metrology and Science has certified the result, which Jolywood says currently represents the world record for an n-type TOPCon cell. It improves on the company’s previous record of 26.1%, which was achieved in November 2022.
The Chinese solar module manufacturer said it achieved the new results thanks to its independently developed Plasma Oxidation & Plasma Assisted Insitu-doping Deposition (POPAID) technology. POPAID is said to solve problems with similar doped amorphous silicon technology.
“Through continuous technological innovation, Jolywood has successfully developed several cutting-edge technologies, such as impurity removal in the silicon wafer body area, local polysilicon layer, polysilicon film hydrogen content control, new metal damage repair, and ultra-fine gate line printing,” the company said. “By adopting mass production equipment and materials on the production line, Jolywood has achieved a conversion efficiency of 26.7%, which shows a clear technical direction to improve the mass production efficiency of the TOPCon cell in the future.”
Jolywood recently commissioned a 1.5GW TOPCon solar plant in Taizhou, Zhejiang Province, China.
“With this new production facility, our TOPCon solar cell production capacity has now reached 3.6 GW,” a company spokesperson said. pv magazine.
In October, the company introduced the double-sided 700W TOPCon solar module at Intersolar in Munich, Germany. In January, it announced the 615 W TOPCon product.