University of Science and Technology

Researchers have developed an all-perovskite tandem solar cell with a power conversion efficiency of 28.5%, open-circuit voltage of 2.112 V, and stabilized efficiency of 28.0%. Teams from Nanjing University, University of Science and Technology of China and Chinese Academy of Sciences (CAS) were involved.

A thorough view of just how electric charges behave inside perovskites might assist initiatives to improve the performance of next-generation solar cells based upon these materials, KAUST research published in Nature Communications has shown.

As a new member of photovoltaic family, antimony trisulfide (Sb2S3) has the satisfactory bandgap of 1.7 eV, profiting the fabrication of the leading absorber layer of tandem solar cells. Because of an unique quasi-one-dimensional framework, it shows benefits of much less dangling bonds. Based upon these advantages, the openings defects upon the surface triggering the recombination of carriers could be minimized dramatically, which assists to resolve the photovoltaic problems in solar cells.