An international team of researchers used a novel interfacial treatment to improve the performance of perovskite solar cells across a range of narrow and wide bandgap single junction, tandem, and mini-module samples.
An all-perovskite tandem solar cell demonstrated its use with a certified efficiency of 29.5%.
The team, led by Huazhong University of Science and Technology, was able to improve (Sn-Pb) single junction tin lead perovskite solar cells, as well as all-perovskite tandem and mini-module variations using a novel mercapto-functionalized scaffold interfacial engineering strategy.
In the study, “Mercapto-functionalized scaffold improves perovskite buried interfaces for tandem photovoltaics,” published in nature communications, the researchers describe how their approach enabled a single-junction narrow bandgap (NBG) tin lead perovskite solar cell with a power conversion efficiency of 23.7%, a two-terminal (2T) all-perovskite tandem solar cell with a certified efficiency of 29.5% and 24.7%-efficient mini-modules measuring 5 × 5 cm2.
As for stability testing, the modified solar cells consistently outperformed control devices, according to the research.
