The new cell’s efficiency is impressive but somewhat lower than other record tandem cells developed in recent times. One example is that of the solar cell by King Abdullah University of Science and Technology (KAUST) which reported 33.2% efficiency in April 2023.
China’s JinkoSolar also produced a 33.85% efficient perovskite tandem solar in January this year. However, the new tandem cell stands out not necessarily for its efficiency but for its novel and defect-reduced manufacturing process.