Science Daily October 24, 2022
Perovskite–silicon tandem solar cells offer the possibility of overcoming the power conversion efficiency limit of conventional silicon solar cells. Researchers in Germany have developed perovskite–silicon tandem solar cells with periodic nanotextures that offer various advantages without compromising the material quality of solution-processed perovskite layers. They showed a reduction in reflection losses in comparison to planar tandems, with the new devices being less sensitive to deviations from optimum layer thicknesses. The nanotextures also enabled a greatly increased fabrication yield from 50% to 95%. The open-circuit voltage was improved by 15 mV due to the enhanced optoelectronic properties of the perovskite top cell. Optically advanced rear reflector with a dielectric buffer layer results in reduced parasitic absorption at near-infrared wavelengths. As a result, they demonstrated a certified power conversion efficiency of 29.80%…read more. Open Access TECHNICAL ARTICLEÂ
Nanootextured PSTSC design. Credit: Nature Nanotechnology (2022)Â