Chinese solar manufacturer Longi says it has set a world record for its monocrystalline passivated emitter rear contact (PERC) module efficiency, at 22.38%. The figure eclipses the previous mark of 21.65%, set by Longi just last month.
The result, which the company says is a record for monocrystalline, was confirmed by German testing and certification provider TÜV Rheinland. No details were provided on how the improvement was achieved.
In February 2018, Longi announced an efficiency of 23.6% for monocrystalline PERC cells. That result also surpassed the company’s previous record of 22.71%, achieved in October 2017.
“Longi has continuously pushed the module efficiency limits of our high performance monocrystalline products to further improve the price-performance ratio,” the company announced. “This breakthrough once again confirms the development headroom of monocrystalline module technology.”
Jinko is also setting records
Chinese solar module manufacturer JinkoSolar says its p-type PERC and n-type HOT bifacial solar modules have achieved conversion efficiencies of 21.82% and 22.49%, respectively.
The world records for their respective technology types, the company said, have been certified by German testing services and certification provider TÜV Rheinland.
Jinko said it was able to improve the panels’ performance by applying a new anti-reflection coating and advanced metallization technologies.
“New Tiling Ribbon (TR) technology was also incorporated into the cell design, which eliminates any inter-cell gap, ensuring high-efficiency and high-reliability while significantly improving the modules’ appearance,” the company added. No further technical details were revealed.
JinkoSolar and TÜV Rheinland began to jointly develop a standardized testing method for bifacial modules in 2017.