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α-DTC₇₀ Fullerene Performs Significantly Better than β-DTC₇₀ as Electron Transporting Material in Perovskite Solar Cells.

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 J _sc 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%).

SUBMITTER: Castro E

PROVIDER: S-EPMC7990232 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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α-DTC70 Fullerene Performs Significantly Better than β-DTC70 as Electron Transporting Material in Perovskite Solar Cells.

Castro Edison E Fernandez-Delgado Olivia O Artigas Albert A Zavala Gerardo G Liu Fang F Moreno-Vicente Antonio A Rodríguez-Fortea Antonio A Velasquez José D JD Poblet Josep M JM Echegoyen Luis L

Journal of materials chemistry. C 20200413 20

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 J sc 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) ...[more]

PMID: 33777397

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