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 TĂśV Rheinland. No details were provided on how the improvement was achieved.
Longi has long dominated the milestones for that type of solar module and had set a record of 20.83% in November 2018 which at the time beat its previous achievements of 20.66% and 20.41%.
In February 2018, Longi announced an efficiency of 23.6% for monocrystalline PERC cells. That result also surpassed the companyâ€™s previous record of 22.71%, achieved in October 2017.
â€śLongi has continuously pushed the module efficiency limits of our high performance monocrystalline products to further improve the price-performance ratio,â€ť the company announced. â€śThis breakthrough once again confirms the development headroom of monocrystalline module technology.â€ť
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 TĂśV Rheinland.
Jinko said it was able to improve the panelsâ€™ performance by applying a new anti-reflection coating and advanced metallization technologies.
â€śNew 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 modulesâ€™ appearance,â€ť the company added. No further technical details were revealed.
JinkoSolar and TĂśV Rheinland began to jointly develop a standardized testing method for bifacial modules in 2017.