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Issue 20, 2020
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α-DTC70 fullerene performs significantly better than β-DTC70 as electron transporting material in perovskite solar cells

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Abstract

In this work, two new C70 isomers, α and β bis(2-(thiophen-2-yl)ethyl)-C70-fullerene mono-adducts (DTC70), were synthesized, characterized and used as electron transporting materials (ETMs) in perovskite solar cells (PSCs). Our results show that the α isomer improves both the Jsc and FF values of the devices, when compared to the results for the β-isomer and to those for phenyl-C70-butyric acid methyl ester (PC71BM), used as control. Devices based on α-DTC70 achieved a power conversion efficiency (PCE) of 15.9%, which is higher than that observed with PC71BM (15.1%).

Graphical abstract: α-DTC70 fullerene performs significantly better than β-DTC70 as electron transporting material in perovskite solar cells

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Supplementary files

Article information


Submitted
17 Mar 2020
Accepted
13 Apr 2020
First published
13 Apr 2020

J. Mater. Chem. C, 2020,8, 6813-6819
Article type
Paper

α-DTC70 fullerene performs significantly better than β-DTC70 as electron transporting material in perovskite solar cells

E. Castro, O. Fernandez-Delgado, A. Artigas, G. Zavala, F. Liu, A. Moreno-Vicente, A. Rodríguez-Fortea, J. D. Velasquez, J. M. Poblet and L. Echegoyen, J. Mater. Chem. C, 2020, 8, 6813
DOI: 10.1039/D0TC01382J

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