Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Well?defined Fullerene Bisadducts Enable High?performance Tin?based Perovskite Solar Cells
Tin?based perovskite solar cells (TPSCs) are attracting intense research interest due to their excellent optoelectric properties and eco?friendly features. To further improve the device performance, developing new fullerene derivatives as electron transporter layers (ETLs) is highly demanded. Four well?defined regioisomers (trans?2, trans?3, trans?4 and e) of diethylmalonate?C60 bisadduct are isolated and well?characterized. The well?defined molecular structure enables us to investigate the real structure?dependent effects on photovoltaic performance. It is found that the chemical structures of the regioisomers not only affect their energy levels, but also lead to significant differences in their molecular packings and interfacial contacts. As a result, the devices with trans?2, trans?3, trans?4, and e as ETLs yield efficiencies of 11.69%, 14.58%, 12.59% and 10.55%, respectively, which are higher than that of the as?prepared DCBA?based (10.28%) device. Notably, the trans?3?based device also demonstrates a certified efficiency of 14.30%, representing one of the best?performing TPSCs.This article is protected by copyright. All rights reserved
» Publication Date: 22/12/2022
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
