Nanjing University researchers achieve 27.35% efficiency in tandem solar cells

Researchers at Nanjing University have developed a perovskite-organic tandem solar cell that achieved a record efficiency of 27.35%. The device utilizes a new low-bandgap (LBG) acceptor to enhance light capture in the near-infrared spectrum and improve photocurrent matching.

According to the study published in the journal Joule, this approach helps minimize spectral overlap between the sub-cells. The device demonstrated stability by maintaining 80% of its initial performance after 744 hours of continuous illumination.