JinkoSolar Holding (JKS) said Monday its N-type TOPCon-based perovskite tandem solar cell attained a conversion efficiency of about 33.8%, higher than its prior record of 33.2%.

The solar cell was tested by the Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, the company added.

The achievement was contributed by innovations including full-area passivated contact technology, perovskite interfacial defect passivation technology, and bulk defect passivation technology, JinkoSolar said.